201775780

素因数分解:

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

素因数の和:277

約数の個数: 72

約数和(自身を含む): 456958656

約数和(自身を除く): 255182876

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, 10201, 11615, 17372, 19780, 20402, 21715, 23230, 40804, 43430, 46460, 51005, 86860, 99889, 102010, 199778, 204020, 234623, 399556, 438643, 469246, 499445, 877286, 938492, 998890, 1173115, 1754572, 1997780, 2193215, 2346230, 4386430, 4692460, 8772860, 10088789, 20177578, 40355156, 50443945, 100887890, 201775780]

約数ペア:

[(1, 201775780), (2, 100887890), (4, 50443945), (5, 40355156), (10, 20177578), (20, 10088789), (23, 8772860), (43, 4692460), (46, 4386430), (86, 2346230), (92, 2193215), (101, 1997780), (115, 1754572), (172, 1173115), (202, 998890), (215, 938492), (230, 877286), (404, 499445), (430, 469246), (460, 438643), (505, 399556), (860, 234623), (989, 204020), (1010, 199778), (1978, 102010), (2020, 99889), (2323, 86860), (3956, 51005), (4343, 46460), (4646, 43430), (4945, 40804), (8686, 23230), (9292, 21715), (9890, 20402), (10201, 19780), (11615, 17372)]