21678844

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{953}}^1$

素因数の和:1026

約数の個数: 36

約数和(自身を含む): 42632352

約数和(自身を除く): 20953508

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 121, 188, 242, 484, 517, 953, 1034, 1906, 2068, 3812, 5687, 10483, 11374, 20966, 22748, 41932, 44791, 89582, 115313, 179164, 230626, 461252, 492701, 985402, 1970804, 5419711, 10839422, 21678844]

約数ペア:

[(1, 21678844), (2, 10839422), (4, 5419711), (11, 1970804), (22, 985402), (44, 492701), (47, 461252), (94, 230626), (121, 179164), (188, 115313), (242, 89582), (484, 44791), (517, 41932), (953, 22748), (1034, 20966), (1906, 11374), (2068, 10483), (3812, 5687)]