1997780

素因数分解:

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

素因数の和:176

約数の個数: 48

約数和(自身を含む): 4523904

約数和(自身を除く): 2526124

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 101, 115, 172, 202, 215, 230, 404, 430, 460, 505, 860, 989, 1010, 1978, 2020, 2323, 3956, 4343, 4646, 4945, 8686, 9292, 9890, 11615, 17372, 19780, 21715, 23230, 43430, 46460, 86860, 99889, 199778, 399556, 499445, 998890, 1997780]

約数ペア:

[(1, 1997780), (2, 998890), (4, 499445), (5, 399556), (10, 199778), (20, 99889), (23, 86860), (43, 46460), (46, 43430), (86, 23230), (92, 21715), (101, 19780), (115, 17372), (172, 11615), (202, 9890), (215, 9292), (230, 8686), (404, 4945), (430, 4646), (460, 4343), (505, 3956), (860, 2323), (989, 2020), (1010, 1978)]