20512667780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{180347}}^1$

素因数の和:180425

約数の個数: 72

約数和(自身を含む): 48356348544

約数和(自身を除く): 27843680764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 47, 55, 94, 110, 121, 188, 220, 235, 242, 470, 484, 517, 605, 940, 1034, 1210, 2068, 2420, 2585, 5170, 5687, 10340, 11374, 22748, 28435, 56870, 113740, 180347, 360694, 721388, 901735, 1803470, 1983817, 3606940, 3967634, 7935268, 8476309, 9919085, 16952618, 19838170, 21821987, 33905236, 39676340, 42381545, 43643974, 84763090, 87287948, 93239399, 109109935, 169526180, 186478798, 218219870, 372957596, 436439740, 466196995, 932393990, 1025633389, 1864787980, 2051266778, 4102533556, 5128166945, 10256333890, 20512667780]

約数ペア:

[(1, 20512667780), (2, 10256333890), (4, 5128166945), (5, 4102533556), (10, 2051266778), (11, 1864787980), (20, 1025633389), (22, 932393990), (44, 466196995), (47, 436439740), (55, 372957596), (94, 218219870), (110, 186478798), (121, 169526180), (188, 109109935), (220, 93239399), (235, 87287948), (242, 84763090), (470, 43643974), (484, 42381545), (517, 39676340), (605, 33905236), (940, 21821987), (1034, 19838170), (1210, 16952618), (2068, 9919085), (2420, 8476309), (2585, 7935268), (5170, 3967634), (5687, 3606940), (10340, 1983817), (11374, 1803470), (22748, 901735), (28435, 721388), (56870, 360694), (113740, 180347)]