405488980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1559573}}^1$

素因数の和:1559595

約数の個数: 24

約数和(自身を含む): 917029512

約数和(自身を除く): 511540532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1559573, 3119146, 6238292, 7797865, 15595730, 20274449, 31191460, 40548898, 81097796, 101372245, 202744490, 405488980]

約数ペア:

[(1, 405488980), (2, 202744490), (4, 101372245), (5, 81097796), (10, 40548898), (13, 31191460), (20, 20274449), (26, 15595730), (52, 7797865), (65, 6238292), (130, 3119146), (260, 1559573)]