640445616

素因数分解:

$2^4\times 3^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{839}}^1$

素因数の和:909

約数の個数: 200

約数和(自身を含む): 2016537600

約数和(自身を除く): 1376091984

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 31, 36, 38, 48, 54, 57, 62, 72, 76, 81, 93, 108, 114, 124, 144, 152, 162, 171, 186, 216, 228, 248, 279, 304, 324, 342, 372, 432, 456, 496, 513, 558, 589, 648, 684, 744, 837, 839, 912, 1026, 1116, 1178, 1296, 1368, 1488, 1539, 1674, 1678, 1767, 2052, 2232, 2356, 2511, 2517, 2736, 3078, 3348, 3356, 3534, 4104, 4464, 4712, 5022, 5034, 5301, 6156, 6696, 6712, 7068, 7551, 8208, 9424, 10044, 10068, 10602, 12312, 13392, 13424, 14136, 15102, 15903, 15941, 20088, 20136, 21204, 22653, 24624, 26009, 28272, 30204, 31806, 31882, 40176, 40272, 42408, 45306, 47709, 47823, 52018, 60408, 63612, 63764, 67959, 78027, 84816, 90612, 95418, 95646, 104036, 120816, 127224, 127528, 135918, 143469, 156054, 181224, 190836, 191292, 208072, 234081, 254448, 255056, 271836, 286938, 312108, 362448, 381672, 382584, 416144, 430407, 468162, 494171, 543672, 573876, 624216, 702243, 763344, 765168, 860814, 936324, 988342, 1087344, 1147752, 1248432, 1291221, 1404486, 1482513, 1721628, 1872648, 1976684, 2106729, 2295504, 2582442, 2808972, 2965026, 3443256, 3745296, 3953368, 4213458, 4447539, 5164884, 5617944, 5930052, 6886512, 7906736, 8426916, 8895078, 10329768, 11235888, 11860104, 13342617, 16853832, 17790156, 20659536, 23720208, 26685234, 33707664, 35580312, 40027851, 53370468, 71160624, 80055702, 106740936, 160111404, 213481872, 320222808, 640445616]

約数ペア:

[(1, 640445616), (2, 320222808), (3, 213481872), (4, 160111404), (6, 106740936), (8, 80055702), (9, 71160624), (12, 53370468), (16, 40027851), (18, 35580312), (19, 33707664), (24, 26685234), (27, 23720208), (31, 20659536), (36, 17790156), (38, 16853832), (48, 13342617), (54, 11860104), (57, 11235888), (62, 10329768), (72, 8895078), (76, 8426916), (81, 7906736), (93, 6886512), (108, 5930052), (114, 5617944), (124, 5164884), (144, 4447539), (152, 4213458), (162, 3953368), (171, 3745296), (186, 3443256), (216, 2965026), (228, 2808972), (248, 2582442), (279, 2295504), (304, 2106729), (324, 1976684), (342, 1872648), (372, 1721628), (432, 1482513), (456, 1404486), (496, 1291221), (513, 1248432), (558, 1147752), (589, 1087344), (648, 988342), (684, 936324), (744, 860814), (837, 765168), (839, 763344), (912, 702243), (1026, 624216), (1116, 573876), (1178, 543672), (1296, 494171), (1368, 468162), (1488, 430407), (1539, 416144), (1674, 382584), (1678, 381672), (1767, 362448), (2052, 312108), (2232, 286938), (2356, 271836), (2511, 255056), (2517, 254448), (2736, 234081), (3078, 208072), (3348, 191292), (3356, 190836), (3534, 181224), (4104, 156054), (4464, 143469), (4712, 135918), (5022, 127528), (5034, 127224), (5301, 120816), (6156, 104036), (6696, 95646), (6712, 95418), (7068, 90612), (7551, 84816), (8208, 78027), (9424, 67959), (10044, 63764), (10068, 63612), (10602, 60408), (12312, 52018), (13392, 47823), (13424, 47709), (14136, 45306), (15102, 42408), (15903, 40272), (15941, 40176), (20088, 31882), (20136, 31806), (21204, 30204), (22653, 28272), (24624, 26009)]