20317160

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 47589120

約数和(自身を除く): 27271960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 101, 107, 188, 202, 214, 235, 376, 404, 428, 470, 505, 535, 808, 856, 940, 1010, 1070, 1880, 2020, 2140, 4040, 4280, 4747, 5029, 9494, 10058, 10807, 18988, 20116, 21614, 23735, 25145, 37976, 40232, 43228, 47470, 50290, 54035, 86456, 94940, 100580, 108070, 189880, 201160, 216140, 432280, 507929, 1015858, 2031716, 2539645, 4063432, 5079290, 10158580, 20317160]

約数ペア:

[(1, 20317160), (2, 10158580), (4, 5079290), (5, 4063432), (8, 2539645), (10, 2031716), (20, 1015858), (40, 507929), (47, 432280), (94, 216140), (101, 201160), (107, 189880), (188, 108070), (202, 100580), (214, 94940), (235, 86456), (376, 54035), (404, 50290), (428, 47470), (470, 43228), (505, 40232), (535, 37976), (808, 25145), (856, 23735), (940, 21614), (1010, 20116), (1070, 18988), (1880, 10807), (2020, 10058), (2140, 9494), (4040, 5029), (4280, 4747)]