81638640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1597}}^1$

素因数の和:1687

約数の個数: 120

約数和(自身を含む): 278205408

約数和(自身を除く): 196566768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 71, 72, 80, 90, 120, 142, 144, 180, 213, 240, 284, 355, 360, 426, 568, 639, 710, 720, 852, 1065, 1136, 1278, 1420, 1597, 1704, 2130, 2556, 2840, 3194, 3195, 3408, 4260, 4791, 5112, 5680, 6388, 6390, 7985, 8520, 9582, 10224, 12776, 12780, 14373, 15970, 17040, 19164, 23955, 25552, 25560, 28746, 31940, 38328, 47910, 51120, 57492, 63880, 71865, 76656, 95820, 113387, 114984, 127760, 143730, 191640, 226774, 229968, 287460, 340161, 383280, 453548, 566935, 574920, 680322, 907096, 1020483, 1133870, 1149840, 1360644, 1700805, 1814192, 2040966, 2267740, 2721288, 3401610, 4081932, 4535480, 5102415, 5442576, 6803220, 8163864, 9070960, 10204830, 13606440, 16327728, 20409660, 27212880, 40819320, 81638640]

約数ペア:

[(1, 81638640), (2, 40819320), (3, 27212880), (4, 20409660), (5, 16327728), (6, 13606440), (8, 10204830), (9, 9070960), (10, 8163864), (12, 6803220), (15, 5442576), (16, 5102415), (18, 4535480), (20, 4081932), (24, 3401610), (30, 2721288), (36, 2267740), (40, 2040966), (45, 1814192), (48, 1700805), (60, 1360644), (71, 1149840), (72, 1133870), (80, 1020483), (90, 907096), (120, 680322), (142, 574920), (144, 566935), (180, 453548), (213, 383280), (240, 340161), (284, 287460), (355, 229968), (360, 226774), (426, 191640), (568, 143730), (639, 127760), (710, 114984), (720, 113387), (852, 95820), (1065, 76656), (1136, 71865), (1278, 63880), (1420, 57492), (1597, 51120), (1704, 47910), (2130, 38328), (2556, 31940), (2840, 28746), (3194, 25560), (3195, 25552), (3408, 23955), (4260, 19164), (4791, 17040), (5112, 15970), (5680, 14373), (6388, 12780), (6390, 12776), (7985, 10224), (8520, 9582)]