28857560920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10161113}}^1$

素因数の和:10161195

約数の個数: 32

約数和(自身を含む): 65844018720

約数和(自身を除く): 36986457800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 10161113, 20322226, 40644452, 50805565, 81288904, 101611130, 203222260, 406444520, 721439023, 1442878046, 2885756092, 3607195115, 5771512184, 7214390230, 14428780460, 28857560920]

約数ペア:

[(1, 28857560920), (2, 14428780460), (4, 7214390230), (5, 5771512184), (8, 3607195115), (10, 2885756092), (20, 1442878046), (40, 721439023), (71, 406444520), (142, 203222260), (284, 101611130), (355, 81288904), (568, 50805565), (710, 40644452), (1420, 20322226), (2840, 10161113)]