20664325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{461}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 28185696

約数和(自身を除く): 7521371

約数列:

[1, 5, 11, 25, 55, 163, 275, 461, 815, 1793, 2305, 4075, 5071, 8965, 11525, 25355, 44825, 75143, 126775, 375715, 826573, 1878575, 4132865, 20664325]

約数ペア:

[(1, 20664325), (5, 4132865), (11, 1878575), (25, 826573), (55, 375715), (163, 126775), (275, 75143), (461, 44825), (815, 25355), (1793, 11525), (2305, 8965), (4075, 5071)]