2480840

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{569}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 5643000

約数和(自身を除く): 3162160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 569, 872, 1090, 1138, 2180, 2276, 2845, 4360, 4552, 5690, 11380, 22760, 62021, 124042, 248084, 310105, 496168, 620210, 1240420, 2480840]

約数ペア:

[(1, 2480840), (2, 1240420), (4, 620210), (5, 496168), (8, 310105), (10, 248084), (20, 124042), (40, 62021), (109, 22760), (218, 11380), (436, 5690), (545, 4552), (569, 4360), (872, 2845), (1090, 2276), (1138, 2180)]