20286357

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3911}}^1$

素因数の和:3953

約数の個数: 32

約数和(自身を含む): 35051520

約数和(自身を除く): 14765163

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 3911, 5187, 11733, 27377, 50843, 74309, 82131, 152529, 222927, 355901, 520163, 966017, 1067703, 1560489, 2898051, 6762119, 20286357]

約数ペア:

[(1, 20286357), (3, 6762119), (7, 2898051), (13, 1560489), (19, 1067703), (21, 966017), (39, 520163), (57, 355901), (91, 222927), (133, 152529), (247, 82131), (273, 74309), (399, 50843), (741, 27377), (1729, 11733), (3911, 5187)]