81404680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1013}}^1$

素因数の和:1079

約数の個数: 96

約数和(自身を含む): 218476440

約数和(自身を除く): 137071760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 245, 280, 287, 328, 392, 410, 490, 574, 820, 980, 1013, 1148, 1435, 1640, 1960, 2009, 2026, 2296, 2870, 4018, 4052, 5065, 5740, 7091, 8036, 8104, 10045, 10130, 11480, 14182, 16072, 20090, 20260, 28364, 35455, 40180, 40520, 41533, 49637, 56728, 70910, 80360, 83066, 99274, 141820, 166132, 198548, 207665, 248185, 283640, 290731, 332264, 397096, 415330, 496370, 581462, 830660, 992740, 1162924, 1453655, 1661320, 1985480, 2035117, 2325848, 2907310, 4070234, 5814620, 8140468, 10175585, 11629240, 16280936, 20351170, 40702340, 81404680]

約数ペア:

[(1, 81404680), (2, 40702340), (4, 20351170), (5, 16280936), (7, 11629240), (8, 10175585), (10, 8140468), (14, 5814620), (20, 4070234), (28, 2907310), (35, 2325848), (40, 2035117), (41, 1985480), (49, 1661320), (56, 1453655), (70, 1162924), (82, 992740), (98, 830660), (140, 581462), (164, 496370), (196, 415330), (205, 397096), (245, 332264), (280, 290731), (287, 283640), (328, 248185), (392, 207665), (410, 198548), (490, 166132), (574, 141820), (820, 99274), (980, 83066), (1013, 80360), (1148, 70910), (1435, 56728), (1640, 49637), (1960, 41533), (2009, 40520), (2026, 40180), (2296, 35455), (2870, 28364), (4018, 20260), (4052, 20090), (5065, 16072), (5740, 14182), (7091, 11480), (8036, 10130), (8104, 10045)]