28509160

素因数分解:

$2^3\times 5^1\times {\mathrm{809}}^1\times {\mathrm{881}}^1$

素因数の和:1701

約数の個数: 32

約数和(自身を含む): 64297800

約数和(自身を除く): 35788640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 809, 881, 1618, 1762, 3236, 3524, 4045, 4405, 6472, 7048, 8090, 8810, 16180, 17620, 32360, 35240, 712729, 1425458, 2850916, 3563645, 5701832, 7127290, 14254580, 28509160]

約数ペア:

[(1, 28509160), (2, 14254580), (4, 7127290), (5, 5701832), (8, 3563645), (10, 2850916), (20, 1425458), (40, 712729), (809, 35240), (881, 32360), (1618, 17620), (1762, 16180), (3236, 8810), (3524, 8090), (4045, 7048), (4405, 6472)]