21716920

素因数分解:

$2^3\times 5^1\times {\mathrm{542923}}^1$

素因数の和:542934

約数の個数: 16

約数和(自身を含む): 48863160

約数和(自身を除く): 27146240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542923, 1085846, 2171692, 2714615, 4343384, 5429230, 10858460, 21716920]

約数ペア:

[(1, 21716920), (2, 10858460), (4, 5429230), (5, 4343384), (8, 2714615), (10, 2171692), (20, 1085846), (40, 542923)]