21001818

素因数分解:

$2^1\times 3^1\times {\mathrm{31}}^1\times {\mathrm{112913}}^1$

素因数の和:112949

約数の個数: 16

約数和(自身を含む): 43358976

約数和(自身を除く): 22357158

約数列:

[1, 2, 3, 6, 31, 62, 93, 186, 112913, 225826, 338739, 677478, 3500303, 7000606, 10500909, 21001818]

約数ペア:

[(1, 21001818), (2, 10500909), (3, 7000606), (6, 3500303), (31, 677478), (62, 338739), (93, 225826), (186, 112913)]