21920475

素因数分解:

$3^1\times 5^2\times {\mathrm{331}}^1\times {\mathrm{883}}^1$

素因数の和:1227

約数の個数: 24

約数和(自身を含む): 36392512

約数和(自身を除く): 14472037

約数列:

[1, 3, 5, 15, 25, 75, 331, 883, 993, 1655, 2649, 4415, 4965, 8275, 13245, 22075, 24825, 66225, 292273, 876819, 1461365, 4384095, 7306825, 21920475]

約数ペア:

[(1, 21920475), (3, 7306825), (5, 4384095), (15, 1461365), (25, 876819), (75, 292273), (331, 66225), (883, 24825), (993, 22075), (1655, 13245), (2649, 8275), (4415, 4965)]