21242396

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12437}}^1$

素因数の和:12509

約数の個数: 24

約数和(自身を含む): 43184736

約数和(自身を除く): 21942340

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12437, 24874, 49748, 87059, 174118, 348236, 758657, 1517314, 3034628, 5310599, 10621198, 21242396]

約数ペア:

[(1, 21242396), (2, 10621198), (4, 5310599), (7, 3034628), (14, 1517314), (28, 758657), (61, 348236), (122, 174118), (244, 87059), (427, 49748), (854, 24874), (1708, 12437)]