20415913

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{617}}^1$

素因数の和:816

約数の個数: 16

約数和(自身を含む): 24324480

約数和(自身を除く): 3908567

約数列:

[1, 7, 29, 163, 203, 617, 1141, 4319, 4727, 17893, 33089, 100571, 125251, 703997, 2916559, 20415913]

約数ペア:

[(1, 20415913), (7, 2916559), (29, 703997), (163, 125251), (203, 100571), (617, 33089), (1141, 17893), (4319, 4727)]