12864920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{18919}}^1$

素因数の和:18947

約数の個数: 32

約数和(自身を含む): 30650400

約数和(自身を除く): 17785480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 18919, 37838, 75676, 94595, 151352, 189190, 321623, 378380, 643246, 756760, 1286492, 1608115, 2572984, 3216230, 6432460, 12864920]

約数ペア:

[(1, 12864920), (2, 6432460), (4, 3216230), (5, 2572984), (8, 1608115), (10, 1286492), (17, 756760), (20, 643246), (34, 378380), (40, 321623), (68, 189190), (85, 151352), (136, 94595), (170, 75676), (340, 37838), (680, 18919)]