21630920

素因数分解:

$2^3\times 5^1\times {\mathrm{540773}}^1$

素因数の和:540784

約数の個数: 16

約数和(自身を含む): 48669660

約数和(自身を除く): 27038740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 540773, 1081546, 2163092, 2703865, 4326184, 5407730, 10815460, 21630920]

約数ペア:

[(1, 21630920), (2, 10815460), (4, 5407730), (5, 4326184), (8, 2703865), (10, 2163092), (20, 1081546), (40, 540773)]