998890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:174

約数の個数: 32

約数和(自身を含む): 1938816

約数和(自身を除く): 939926

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 101, 115, 202, 215, 230, 430, 505, 989, 1010, 1978, 2323, 4343, 4646, 4945, 8686, 9890, 11615, 21715, 23230, 43430, 99889, 199778, 499445, 998890]

約数ペア:

[(1, 998890), (2, 499445), (5, 199778), (10, 99889), (23, 43430), (43, 23230), (46, 21715), (86, 11615), (101, 9890), (115, 8686), (202, 4945), (215, 4646), (230, 4343), (430, 2323), (505, 1978), (989, 1010)]