20125475125

素因数分解:

$5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{7649}}^1$

素因数の和:7799

約数の個数: 64

約数和(自身を含む): 29940019200

約数和(自身を除く): 9814544075

約数列:

[1, 5, 7, 25, 31, 35, 97, 125, 155, 175, 217, 485, 679, 775, 875, 1085, 2425, 3007, 3395, 3875, 5425, 7649, 12125, 15035, 16975, 21049, 27125, 38245, 53543, 75175, 84875, 105245, 191225, 237119, 267715, 375875, 526225, 741953, 956125, 1185595, 1338575, 1659833, 2631125, 3709765, 5193671, 5927975, 6692875, 8299165, 18548825, 23000543, 25968355, 29639875, 41495825, 92744125, 115002715, 129841775, 161003801, 207479125, 575013575, 649208875, 805019005, 2875067875, 4025095025, 20125475125]

約数ペア:

[(1, 20125475125), (5, 4025095025), (7, 2875067875), (25, 805019005), (31, 649208875), (35, 575013575), (97, 207479125), (125, 161003801), (155, 129841775), (175, 115002715), (217, 92744125), (485, 41495825), (679, 29639875), (775, 25968355), (875, 23000543), (1085, 18548825), (2425, 8299165), (3007, 6692875), (3395, 5927975), (3875, 5193671), (5425, 3709765), (7649, 2631125), (12125, 1659833), (15035, 1338575), (16975, 1185595), (21049, 956125), (27125, 741953), (38245, 526225), (53543, 375875), (75175, 267715), (84875, 237119), (105245, 191225)]