21747088

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:316

約数の個数: 60

約数和(自身を含む): 47496960

約数和(自身を除く): 25749872

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 121, 176, 188, 239, 242, 376, 478, 484, 517, 752, 956, 968, 1034, 1912, 1936, 2068, 2629, 3824, 4136, 5258, 5687, 8272, 10516, 11233, 11374, 21032, 22466, 22748, 28919, 42064, 44932, 45496, 57838, 89864, 90992, 115676, 123563, 179728, 231352, 247126, 462704, 494252, 988504, 1359193, 1977008, 2718386, 5436772, 10873544, 21747088]

約数ペア:

[(1, 21747088), (2, 10873544), (4, 5436772), (8, 2718386), (11, 1977008), (16, 1359193), (22, 988504), (44, 494252), (47, 462704), (88, 247126), (94, 231352), (121, 179728), (176, 123563), (188, 115676), (239, 90992), (242, 89864), (376, 57838), (478, 45496), (484, 44932), (517, 42064), (752, 28919), (956, 22748), (968, 22466), (1034, 21032), (1912, 11374), (1936, 11233), (2068, 10516), (2629, 8272), (3824, 5687), (4136, 5258)]