20521017

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{3911}}^1$

素因数の和:3981

約数の個数: 24

約数和(自身を含む): 32954688

約数和(自身を除く): 12433671

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 3911, 5247, 11733, 35199, 43021, 129063, 207283, 387189, 621849, 1865547, 2280113, 6840339, 20521017]

約数ペア:

[(1, 20521017), (3, 6840339), (9, 2280113), (11, 1865547), (33, 621849), (53, 387189), (99, 207283), (159, 129063), (477, 43021), (583, 35199), (1749, 11733), (3911, 5247)]