215691080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{490207}}^1$

素因数の和:490229

約数の個数: 32

約数和(自身を含む): 529424640

約数和(自身を除く): 313733560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 490207, 980414, 1960828, 2451035, 3921656, 4902070, 5392277, 9804140, 10784554, 19608280, 21569108, 26961385, 43138216, 53922770, 107845540, 215691080]

約数ペア:

[(1, 215691080), (2, 107845540), (4, 53922770), (5, 43138216), (8, 26961385), (10, 21569108), (11, 19608280), (20, 10784554), (22, 9804140), (40, 5392277), (44, 4902070), (55, 3921656), (88, 2451035), (110, 1960828), (220, 980414), (440, 490207)]