20143664

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20639}}^1$

素因数の和:20708

約数の個数: 20

約数和(自身を含む): 39670080

約数和(自身を除く): 19526416

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20639, 41278, 82556, 165112, 330224, 1258979, 2517958, 5035916, 10071832, 20143664]

約数ペア:

[(1, 20143664), (2, 10071832), (4, 5035916), (8, 2517958), (16, 1258979), (61, 330224), (122, 165112), (244, 82556), (488, 41278), (976, 20639)]