20178860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77611}}^1$

素因数の和:77633

約数の個数: 24

約数和(自身を含む): 45635856

約数和(自身を除く): 25456996

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77611, 155222, 310444, 388055, 776110, 1008943, 1552220, 2017886, 4035772, 5044715, 10089430, 20178860]

約数ペア:

[(1, 20178860), (2, 10089430), (4, 5044715), (5, 4035772), (10, 2017886), (13, 1552220), (20, 1008943), (26, 776110), (52, 388055), (65, 310444), (130, 155222), (260, 77611)]