20212941

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7237}}^1$

素因数の和:7273

約数の個数: 24

約数和(自身を含む): 33005280

約数和(自身を除く): 12792339

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7237, 21711, 50659, 137503, 151977, 354613, 412509, 962521, 1063839, 2887563, 6737647, 20212941]

約数ペア:

[(1, 20212941), (3, 6737647), (7, 2887563), (19, 1063839), (21, 962521), (49, 412509), (57, 354613), (133, 151977), (147, 137503), (399, 50659), (931, 21711), (2793, 7237)]