21242216

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{39631}}^1$

素因数の和:39704

約数の個数: 16

約数和(自身を含む): 40424640

約数和(自身を除く): 19182424

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 39631, 79262, 158524, 317048, 2655277, 5310554, 10621108, 21242216]

約数ペア:

[(1, 21242216), (2, 10621108), (4, 5310554), (8, 2655277), (67, 317048), (134, 158524), (268, 79262), (536, 39631)]