20738120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2099}}^1$

素因数の和:2142

約数の個数: 64

約数和(自身を含む): 52920000

約数和(自身を除く): 32181880

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2099, 2470, 4198, 4940, 8396, 9880, 10495, 16792, 20990, 27287, 39881, 41980, 54574, 79762, 83960, 109148, 136435, 159524, 199405, 218296, 272870, 319048, 398810, 518453, 545740, 797620, 1036906, 1091480, 1595240, 2073812, 2592265, 4147624, 5184530, 10369060, 20738120]

約数ペア:

[(1, 20738120), (2, 10369060), (4, 5184530), (5, 4147624), (8, 2592265), (10, 2073812), (13, 1595240), (19, 1091480), (20, 1036906), (26, 797620), (38, 545740), (40, 518453), (52, 398810), (65, 319048), (76, 272870), (95, 218296), (104, 199405), (130, 159524), (152, 136435), (190, 109148), (247, 83960), (260, 79762), (380, 54574), (494, 41980), (520, 39881), (760, 27287), (988, 20990), (1235, 16792), (1976, 10495), (2099, 9880), (2470, 8396), (4198, 4940)]