21205264

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1987}}^1$

素因数の和:2047

約数の個数: 40

約数和(自身を含む): 44372160

約数和(自身を除く): 23166896

約数列:

[1, 2, 4, 8, 16, 23, 29, 46, 58, 92, 116, 184, 232, 368, 464, 667, 1334, 1987, 2668, 3974, 5336, 7948, 10672, 15896, 31792, 45701, 57623, 91402, 115246, 182804, 230492, 365608, 460984, 731216, 921968, 1325329, 2650658, 5301316, 10602632, 21205264]

約数ペア:

[(1, 21205264), (2, 10602632), (4, 5301316), (8, 2650658), (16, 1325329), (23, 921968), (29, 731216), (46, 460984), (58, 365608), (92, 230492), (116, 182804), (184, 115246), (232, 91402), (368, 57623), (464, 45701), (667, 31792), (1334, 15896), (1987, 10672), (2668, 7948), (3974, 5336)]