20196372890

素因数分解:

$2^1\times 5^1\times {\mathrm{25601}}^1\times {\mathrm{78889}}^1$

素因数の和:104497

約数の個数: 16

約数和(自身を含む): 36355352040

約数和(自身を除く): 16158979150

約数列:

[1, 2, 5, 10, 25601, 51202, 78889, 128005, 157778, 256010, 394445, 788890, 2019637289, 4039274578, 10098186445, 20196372890]

約数ペア:

[(1, 20196372890), (2, 10098186445), (5, 4039274578), (10, 2019637289), (25601, 788890), (51202, 394445), (78889, 256010), (128005, 157778)]