21285460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152039}}^1$

素因数の和:152055

約数の個数: 24

約数和(自身を含む): 51085440

約数和(自身を除く): 29799980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152039, 304078, 608156, 760195, 1064273, 1520390, 2128546, 3040780, 4257092, 5321365, 10642730, 21285460]

約数ペア:

[(1, 21285460), (2, 10642730), (4, 5321365), (5, 4257092), (7, 3040780), (10, 2128546), (14, 1520390), (20, 1064273), (28, 760195), (35, 608156), (70, 304078), (140, 152039)]