2489560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 5662800

約数和(自身を除く): 3173240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 571, 872, 1090, 1142, 2180, 2284, 2855, 4360, 4568, 5710, 11420, 22840, 62239, 124478, 248956, 311195, 497912, 622390, 1244780, 2489560]

約数ペア:

[(1, 2489560), (2, 1244780), (4, 622390), (5, 497912), (8, 311195), (10, 248956), (20, 124478), (40, 62239), (109, 22840), (218, 11420), (436, 5710), (545, 4568), (571, 4360), (872, 2855), (1090, 2284), (1142, 2180)]