20751575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{953}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 28154448

約数和(自身を除く): 7402873

約数列:

[1, 5, 13, 25, 65, 67, 325, 335, 871, 953, 1675, 4355, 4765, 12389, 21775, 23825, 61945, 63851, 309725, 319255, 830063, 1596275, 4150315, 20751575]

約数ペア:

[(1, 20751575), (5, 4150315), (13, 1596275), (25, 830063), (65, 319255), (67, 309725), (325, 63851), (335, 61945), (871, 23825), (953, 21775), (1675, 12389), (4355, 4765)]