21000948016

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42340621}}^1$

素因数の和:42340660

約数の個数: 20

約数和(自身を含む): 42001897024

約数和(自身を除く): 21000949008

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42340621, 84681242, 169362484, 338724968, 677449936, 1312559251, 2625118502, 5250237004, 10500474008, 21000948016]

約数ペア:

[(1, 21000948016), (2, 10500474008), (4, 5250237004), (8, 2625118502), (16, 1312559251), (31, 677449936), (62, 338724968), (124, 169362484), (248, 84681242), (496, 42340621)]