640641313

素因数分解:

${\mathrm{13}}^2\times {\mathrm{89}}^1\times {\mathrm{191}}^1\times {\mathrm{223}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 708341760

約数和(自身を除く): 67700447

約数列:

[1, 13, 89, 169, 191, 223, 1157, 2483, 2899, 15041, 16999, 19847, 32279, 37687, 42593, 220987, 258011, 553709, 2872831, 3354143, 3790777, 7198217, 49280101, 640641313]

約数ペア:

[(1, 640641313), (13, 49280101), (89, 7198217), (169, 3790777), (191, 3354143), (223, 2872831), (1157, 553709), (2483, 258011), (2899, 220987), (15041, 42593), (16999, 37687), (19847, 32279)]