81279120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:377

約数の個数: 160

約数和(自身を含む): 274982400

約数和(自身を除く): 193703280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 109, 120, 130, 156, 195, 208, 218, 239, 240, 260, 312, 327, 390, 436, 478, 520, 545, 624, 654, 717, 780, 872, 956, 1040, 1090, 1195, 1308, 1417, 1434, 1560, 1635, 1744, 1912, 2180, 2390, 2616, 2834, 2868, 3107, 3120, 3270, 3585, 3824, 4251, 4360, 4780, 5232, 5668, 5736, 6214, 6540, 7085, 7170, 8502, 8720, 9321, 9560, 11336, 11472, 12428, 13080, 14170, 14340, 15535, 17004, 18642, 19120, 21255, 22672, 24856, 26051, 26160, 28340, 28680, 31070, 34008, 37284, 42510, 46605, 49712, 52102, 56680, 57360, 62140, 68016, 74568, 78153, 85020, 93210, 104204, 113360, 124280, 130255, 149136, 156306, 170040, 186420, 208408, 248560, 260510, 312612, 338663, 340080, 372840, 390765, 416816, 521020, 625224, 677326, 745680, 781530, 1015989, 1042040, 1250448, 1354652, 1563060, 1693315, 2031978, 2084080, 2709304, 3126120, 3386630, 4063956, 5079945, 5418608, 6252240, 6773260, 8127912, 10159890, 13546520, 16255824, 20319780, 27093040, 40639560, 81279120]

約数ペア:

[(1, 81279120), (2, 40639560), (3, 27093040), (4, 20319780), (5, 16255824), (6, 13546520), (8, 10159890), (10, 8127912), (12, 6773260), (13, 6252240), (15, 5418608), (16, 5079945), (20, 4063956), (24, 3386630), (26, 3126120), (30, 2709304), (39, 2084080), (40, 2031978), (48, 1693315), (52, 1563060), (60, 1354652), (65, 1250448), (78, 1042040), (80, 1015989), (104, 781530), (109, 745680), (120, 677326), (130, 625224), (156, 521020), (195, 416816), (208, 390765), (218, 372840), (239, 340080), (240, 338663), (260, 312612), (312, 260510), (327, 248560), (390, 208408), (436, 186420), (478, 170040), (520, 156306), (545, 149136), (624, 130255), (654, 124280), (717, 113360), (780, 104204), (872, 93210), (956, 85020), (1040, 78153), (1090, 74568), (1195, 68016), (1308, 62140), (1417, 57360), (1434, 56680), (1560, 52102), (1635, 49712), (1744, 46605), (1912, 42510), (2180, 37284), (2390, 34008), (2616, 31070), (2834, 28680), (2868, 28340), (3107, 26160), (3120, 26051), (3270, 24856), (3585, 22672), (3824, 21255), (4251, 19120), (4360, 18642), (4780, 17004), (5232, 15535), (5668, 14340), (5736, 14170), (6214, 13080), (6540, 12428), (7085, 11472), (7170, 11336), (8502, 9560), (8720, 9321)]