686890

素因数分解:

$2^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:617

約数の個数: 16

約数和(自身を含む): 1247400

約数和(自身を除く): 560510

約数列:

[1, 2, 5, 10, 149, 298, 461, 745, 922, 1490, 2305, 4610, 68689, 137378, 343445, 686890]

約数ペア:

[(1, 686890), (2, 343445), (5, 137378), (10, 68689), (149, 4610), (298, 2305), (461, 1490), (745, 922)]