21520994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{4093}}^1$

素因数の和:4345

約数の個数: 16

約数和(自身を含む): 35372160

約数和(自身を除く): 13851166

約数列:

[1, 2, 11, 22, 239, 478, 2629, 4093, 5258, 8186, 45023, 90046, 978227, 1956454, 10760497, 21520994]

約数ペア:

[(1, 21520994), (2, 10760497), (11, 1956454), (22, 978227), (239, 90046), (478, 45023), (2629, 8186), (4093, 5258)]