20561043976

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{557633}}^1$

素因数の和:558069

約数の個数: 32

約数和(自身を含む): 42157130400

約数和(自身を除く): 21596086424

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 419, 838, 1676, 3352, 4609, 9218, 18436, 36872, 557633, 1115266, 2230532, 4461064, 6133963, 12267926, 24535852, 49071704, 233648227, 467296454, 934592908, 1869185816, 2570130497, 5140260994, 10280521988, 20561043976]

約数ペア:

[(1, 20561043976), (2, 10280521988), (4, 5140260994), (8, 2570130497), (11, 1869185816), (22, 934592908), (44, 467296454), (88, 233648227), (419, 49071704), (838, 24535852), (1676, 12267926), (3352, 6133963), (4609, 4461064), (9218, 2230532), (18436, 1115266), (36872, 557633)]