81338580

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 240

約数和(自身を含む): 278087040

約数和(自身を除く): 196748460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 37, 45, 46, 54, 59, 60, 69, 74, 81, 90, 92, 108, 111, 115, 118, 135, 138, 148, 162, 177, 180, 185, 207, 222, 230, 236, 270, 276, 295, 324, 333, 345, 354, 370, 405, 414, 444, 460, 531, 540, 555, 590, 621, 666, 690, 708, 740, 810, 828, 851, 885, 999, 1035, 1062, 1110, 1180, 1242, 1332, 1357, 1380, 1593, 1620, 1665, 1702, 1770, 1863, 1998, 2070, 2124, 2183, 2220, 2484, 2553, 2655, 2714, 2997, 3105, 3186, 3330, 3404, 3540, 3726, 3996, 4071, 4140, 4255, 4366, 4779, 4995, 5106, 5310, 5428, 5994, 6210, 6372, 6549, 6660, 6785, 7452, 7659, 7965, 8142, 8510, 8732, 9315, 9558, 9990, 10212, 10620, 10915, 11988, 12213, 12420, 12765, 13098, 13570, 14985, 15318, 15930, 16284, 17020, 18630, 19116, 19647, 19980, 20355, 21830, 22977, 23895, 24426, 25530, 26196, 27140, 29970, 30636, 31860, 32745, 36639, 37260, 38295, 39294, 40710, 43660, 45954, 47790, 48852, 50209, 51060, 58941, 59940, 61065, 65490, 68931, 73278, 76590, 78588, 81420, 91908, 95580, 98235, 100418, 109917, 114885, 117882, 122130, 130980, 137862, 146556, 150627, 153180, 176823, 183195, 196470, 200836, 219834, 229770, 235764, 244260, 251045, 275724, 294705, 301254, 344655, 353646, 366390, 392940, 439668, 451881, 459540, 502090, 549585, 589410, 602508, 689310, 707292, 732780, 753135, 884115, 903762, 1004180, 1099170, 1178820, 1355643, 1378620, 1506270, 1768230, 1807524, 2198340, 2259405, 2711286, 3012540, 3536460, 4066929, 4518810, 5422572, 6778215, 8133858, 9037620, 13556430, 16267716, 20334645, 27112860, 40669290, 81338580]

約数ペア:

[(1, 81338580), (2, 40669290), (3, 27112860), (4, 20334645), (5, 16267716), (6, 13556430), (9, 9037620), (10, 8133858), (12, 6778215), (15, 5422572), (18, 4518810), (20, 4066929), (23, 3536460), (27, 3012540), (30, 2711286), (36, 2259405), (37, 2198340), (45, 1807524), (46, 1768230), (54, 1506270), (59, 1378620), (60, 1355643), (69, 1178820), (74, 1099170), (81, 1004180), (90, 903762), (92, 884115), (108, 753135), (111, 732780), (115, 707292), (118, 689310), (135, 602508), (138, 589410), (148, 549585), (162, 502090), (177, 459540), (180, 451881), (185, 439668), (207, 392940), (222, 366390), (230, 353646), (236, 344655), (270, 301254), (276, 294705), (295, 275724), (324, 251045), (333, 244260), (345, 235764), (354, 229770), (370, 219834), (405, 200836), (414, 196470), (444, 183195), (460, 176823), (531, 153180), (540, 150627), (555, 146556), (590, 137862), (621, 130980), (666, 122130), (690, 117882), (708, 114885), (740, 109917), (810, 100418), (828, 98235), (851, 95580), (885, 91908), (999, 81420), (1035, 78588), (1062, 76590), (1110, 73278), (1180, 68931), (1242, 65490), (1332, 61065), (1357, 59940), (1380, 58941), (1593, 51060), (1620, 50209), (1665, 48852), (1702, 47790), (1770, 45954), (1863, 43660), (1998, 40710), (2070, 39294), (2124, 38295), (2183, 37260), (2220, 36639), (2484, 32745), (2553, 31860), (2655, 30636), (2714, 29970), (2997, 27140), (3105, 26196), (3186, 25530), (3330, 24426), (3404, 23895), (3540, 22977), (3726, 21830), (3996, 20355), (4071, 19980), (4140, 19647), (4255, 19116), (4366, 18630), (4779, 17020), (4995, 16284), (5106, 15930), (5310, 15318), (5428, 14985), (5994, 13570), (6210, 13098), (6372, 12765), (6549, 12420), (6660, 12213), (6785, 11988), (7452, 10915), (7659, 10620), (7965, 10212), (8142, 9990), (8510, 9558), (8732, 9315)]