21000359564

素因数分解:

$2^2\times {\mathrm{157}}^1\times {\mathrm{1607}}^1\times {\mathrm{20809}}^1$

素因数の和:22577

約数の個数: 24

約数和(自身を含む): 37009502880

約数和(自身を除く): 16009143316

約数列:

[1, 2, 4, 157, 314, 628, 1607, 3214, 6428, 20809, 41618, 83236, 252299, 504598, 1009196, 3267013, 6534026, 13068052, 33440063, 66880126, 133760252, 5250089891, 10500179782, 21000359564]

約数ペア:

[(1, 21000359564), (2, 10500179782), (4, 5250089891), (157, 133760252), (314, 66880126), (628, 33440063), (1607, 13068052), (3214, 6534026), (6428, 3267013), (20809, 1009196), (41618, 504598), (83236, 252299)]