31987475

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 43977096

約数和(自身を除く): 11989621

約数列:

[1, 5, 13, 25, 65, 67, 113, 169, 325, 335, 565, 845, 871, 1469, 1675, 2825, 4225, 4355, 7345, 7571, 11323, 19097, 21775, 36725, 37855, 56615, 95485, 98423, 189275, 283075, 477425, 492115, 1279499, 2460575, 6397495, 31987475]

約数ペア:

[(1, 31987475), (5, 6397495), (13, 2460575), (25, 1279499), (65, 492115), (67, 477425), (113, 283075), (169, 189275), (325, 98423), (335, 95485), (565, 56615), (845, 37855), (871, 36725), (1469, 21775), (1675, 19097), (2825, 11323), (4225, 7571), (4355, 7345)]