8997220

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1289}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 18963000

約数和(自身を除く): 9965780

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1289, 1396, 1745, 2578, 3490, 5156, 6445, 6980, 12890, 25780, 449861, 899722, 1799444, 2249305, 4498610, 8997220]

約数ペア:

[(1, 8997220), (2, 4498610), (4, 2249305), (5, 1799444), (10, 899722), (20, 449861), (349, 25780), (698, 12890), (1289, 6980), (1396, 6445), (1745, 5156), (2578, 3490)]