13205855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:108

約数の個数: 48

約数和(自身を含む): 19598880

約数和(自身を除く): 6393025

約数列:

[1, 5, 13, 17, 19, 37, 65, 85, 95, 185, 221, 247, 289, 323, 481, 629, 703, 1105, 1235, 1445, 1615, 2405, 3145, 3515, 3757, 4199, 5491, 8177, 9139, 10693, 11951, 18785, 20995, 27455, 40885, 45695, 53465, 59755, 71383, 139009, 155363, 203167, 356915, 695045, 776815, 1015835, 2641171, 13205855]

約数ペア:

[(1, 13205855), (5, 2641171), (13, 1015835), (17, 776815), (19, 695045), (37, 356915), (65, 203167), (85, 155363), (95, 139009), (185, 71383), (221, 59755), (247, 53465), (289, 45695), (323, 40885), (481, 27455), (629, 20995), (703, 18785), (1105, 11951), (1235, 10693), (1445, 9139), (1615, 8177), (2405, 5491), (3145, 4199), (3515, 3757)]