21000657625

素因数分解:

$5^3\times {\mathrm{97}}^1\times {\mathrm{1039}}^1\times {\mathrm{1667}}^1$

素因数の和:2818

約数の個数: 32

約数和(自身を含む): 26520399360

約数和(自身を除く): 5519741735

約数列:

[1, 5, 25, 97, 125, 485, 1039, 1667, 2425, 5195, 8335, 12125, 25975, 41675, 100783, 129875, 161699, 208375, 503915, 808495, 1732013, 2519575, 4042475, 8660065, 12597875, 20212375, 43300325, 168005261, 216501625, 840026305, 4200131525, 21000657625]

約数ペア:

[(1, 21000657625), (5, 4200131525), (25, 840026305), (97, 216501625), (125, 168005261), (485, 43300325), (1039, 20212375), (1667, 12597875), (2425, 8660065), (5195, 4042475), (8335, 2519575), (12125, 1732013), (25975, 808495), (41675, 503915), (100783, 208375), (129875, 161699)]