21000772808

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{138162979}}^1$

素因数の和:138163004

約数の個数: 16

約数和(自身を含む): 41448894000

約数和(自身を除く): 20448121192

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 138162979, 276325958, 552651916, 1105303832, 2625096601, 5250193202, 10500386404, 21000772808]

約数ペア:

[(1, 21000772808), (2, 10500386404), (4, 5250193202), (8, 2625096601), (19, 1105303832), (38, 552651916), (76, 276325958), (152, 138162979)]