640475748

素因数分解:

$2^2\times 3^4\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^2$

素因数の和:117

約数の個数: 270

約数和(自身を含む): 2013523974

約数和(自身を除く): 1373048226

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 17, 18, 22, 27, 31, 33, 34, 36, 44, 51, 54, 62, 66, 68, 81, 93, 99, 102, 108, 121, 124, 132, 153, 162, 186, 187, 198, 204, 242, 279, 297, 306, 324, 341, 363, 372, 374, 396, 459, 484, 527, 558, 561, 594, 612, 682, 726, 748, 837, 891, 918, 961, 1023, 1054, 1089, 1116, 1122, 1188, 1364, 1377, 1452, 1581, 1674, 1683, 1782, 1836, 1922, 2046, 2057, 2108, 2178, 2244, 2511, 2754, 2883, 3069, 3162, 3267, 3348, 3366, 3564, 3751, 3844, 4092, 4114, 4356, 4743, 5022, 5049, 5508, 5766, 5797, 6138, 6171, 6324, 6534, 6732, 7502, 8228, 8649, 9207, 9486, 9801, 10044, 10098, 10571, 11253, 11532, 11594, 12276, 12342, 13068, 14229, 15004, 15147, 16337, 17298, 17391, 18414, 18513, 18972, 19602, 20196, 21142, 22506, 23188, 24684, 25947, 27621, 28458, 30294, 31713, 32674, 33759, 34596, 34782, 36828, 37026, 39204, 42284, 42687, 45012, 49011, 51894, 52173, 55242, 55539, 56916, 60588, 63426, 63767, 65348, 67518, 69564, 74052, 77841, 85374, 95139, 98022, 101277, 103788, 104346, 110484, 111078, 116281, 126852, 127534, 135036, 147033, 155682, 156519, 166617, 170748, 179707, 190278, 191301, 196044, 202554, 208692, 222156, 232562, 255068, 285417, 294066, 303831, 311364, 313038, 333234, 348843, 359414, 380556, 382602, 405108, 441099, 465124, 469557, 539121, 570834, 573903, 588132, 607662, 626076, 666468, 697686, 718828, 765204, 856251, 882198, 939114, 1046529, 1078242, 1141668, 1147806, 1215324, 1323297, 1395372, 1617363, 1712502, 1721709, 1764396, 1878228, 1976777, 2093058, 2156484, 2295612, 2646594, 3139587, 3234726, 3425004, 3443418, 3953554, 4186116, 4852089, 5165127, 5293188, 5930331, 6279174, 6469452, 6886836, 7907108, 9418761, 9704178, 10330254, 11860662, 12558348, 14556267, 17790993, 18837522, 19408356, 20660508, 23721324, 29112534, 35581986, 37675044, 53372979, 58225068, 71163972, 106745958, 160118937, 213491916, 320237874, 640475748]

約数ペア:

[(1, 640475748), (2, 320237874), (3, 213491916), (4, 160118937), (6, 106745958), (9, 71163972), (11, 58225068), (12, 53372979), (17, 37675044), (18, 35581986), (22, 29112534), (27, 23721324), (31, 20660508), (33, 19408356), (34, 18837522), (36, 17790993), (44, 14556267), (51, 12558348), (54, 11860662), (62, 10330254), (66, 9704178), (68, 9418761), (81, 7907108), (93, 6886836), (99, 6469452), (102, 6279174), (108, 5930331), (121, 5293188), (124, 5165127), (132, 4852089), (153, 4186116), (162, 3953554), (186, 3443418), (187, 3425004), (198, 3234726), (204, 3139587), (242, 2646594), (279, 2295612), (297, 2156484), (306, 2093058), (324, 1976777), (341, 1878228), (363, 1764396), (372, 1721709), (374, 1712502), (396, 1617363), (459, 1395372), (484, 1323297), (527, 1215324), (558, 1147806), (561, 1141668), (594, 1078242), (612, 1046529), (682, 939114), (726, 882198), (748, 856251), (837, 765204), (891, 718828), (918, 697686), (961, 666468), (1023, 626076), (1054, 607662), (1089, 588132), (1116, 573903), (1122, 570834), (1188, 539121), (1364, 469557), (1377, 465124), (1452, 441099), (1581, 405108), (1674, 382602), (1683, 380556), (1782, 359414), (1836, 348843), (1922, 333234), (2046, 313038), (2057, 311364), (2108, 303831), (2178, 294066), (2244, 285417), (2511, 255068), (2754, 232562), (2883, 222156), (3069, 208692), (3162, 202554), (3267, 196044), (3348, 191301), (3366, 190278), (3564, 179707), (3751, 170748), (3844, 166617), (4092, 156519), (4114, 155682), (4356, 147033), (4743, 135036), (5022, 127534), (5049, 126852), (5508, 116281), (5766, 111078), (5797, 110484), (6138, 104346), (6171, 103788), (6324, 101277), (6534, 98022), (6732, 95139), (7502, 85374), (8228, 77841), (8649, 74052), (9207, 69564), (9486, 67518), (9801, 65348), (10044, 63767), (10098, 63426), (10571, 60588), (11253, 56916), (11532, 55539), (11594, 55242), (12276, 52173), (12342, 51894), (13068, 49011), (14229, 45012), (15004, 42687), (15147, 42284), (16337, 39204), (17298, 37026), (17391, 36828), (18414, 34782), (18513, 34596), (18972, 33759), (19602, 32674), (20196, 31713), (21142, 30294), (22506, 28458), (23188, 27621), (24684, 25947)]