28649560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6571}}^1$

素因数の和:6691

約数の個数: 32

約数和(自身を含む): 65062800

約数和(自身を除く): 36413240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 6571, 13142, 26284, 32855, 52568, 65710, 131420, 262840, 716239, 1432478, 2864956, 3581195, 5729912, 7162390, 14324780, 28649560]

約数ペア:

[(1, 28649560), (2, 14324780), (4, 7162390), (5, 5729912), (8, 3581195), (10, 2864956), (20, 1432478), (40, 716239), (109, 262840), (218, 131420), (436, 65710), (545, 52568), (872, 32855), (1090, 26284), (2180, 13142), (4360, 6571)]