20141875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 40

約数和(自身を含む): 28253456

約数和(自身を除く): 8111581

約数列:

[1, 5, 13, 25, 37, 65, 67, 125, 185, 325, 335, 481, 625, 871, 925, 1625, 1675, 2405, 2479, 4355, 4625, 8125, 8375, 12025, 12395, 21775, 23125, 32227, 41875, 60125, 61975, 108875, 161135, 300625, 309875, 544375, 805675, 1549375, 4028375, 20141875]

約数ペア:

[(1, 20141875), (5, 4028375), (13, 1549375), (25, 805675), (37, 544375), (65, 309875), (67, 300625), (125, 161135), (185, 108875), (325, 61975), (335, 60125), (481, 41875), (625, 32227), (871, 23125), (925, 21775), (1625, 12395), (1675, 12025), (2405, 8375), (2479, 8125), (4355, 4625)]