21839810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70451}}^1$

素因数の和:70489

約数の個数: 16

約数和(自身を含む): 40580352

約数和(自身を除く): 18740542

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70451, 140902, 352255, 704510, 2183981, 4367962, 10919905, 21839810]

約数ペア:

[(1, 21839810), (2, 10919905), (5, 4367962), (10, 2183981), (31, 704510), (62, 352255), (155, 140902), (310, 70451)]