61380920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21613}}^1$

素因数の和:21695

約数の個数: 32

約数和(自身を含む): 140058720

約数和(自身を除く): 78677800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 21613, 43226, 86452, 108065, 172904, 216130, 432260, 864520, 1534523, 3069046, 6138092, 7672615, 12276184, 15345230, 30690460, 61380920]

約数ペア:

[(1, 61380920), (2, 30690460), (4, 15345230), (5, 12276184), (8, 7672615), (10, 6138092), (20, 3069046), (40, 1534523), (71, 864520), (142, 432260), (284, 216130), (355, 172904), (568, 108065), (710, 86452), (1420, 43226), (2840, 21613)]