31228040

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{2543}}^1$

素因数の和:2861

約数の個数: 32

約数和(自身を含む): 70519680

約数和(自身を除く): 39291640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1228, 1535, 2456, 2543, 3070, 5086, 6140, 10172, 12280, 12715, 20344, 25430, 50860, 101720, 780701, 1561402, 3122804, 3903505, 6245608, 7807010, 15614020, 31228040]

約数ペア:

[(1, 31228040), (2, 15614020), (4, 7807010), (5, 6245608), (8, 3903505), (10, 3122804), (20, 1561402), (40, 780701), (307, 101720), (614, 50860), (1228, 25430), (1535, 20344), (2456, 12715), (2543, 12280), (3070, 10172), (5086, 6140)]