21450986

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{1031}}^1$

素因数の和:1237

約数の個数: 16

約数和(自身を含む): 32842368

約数和(自身を除く): 11391382

約数列:

[1, 2, 101, 103, 202, 206, 1031, 2062, 10403, 20806, 104131, 106193, 208262, 212386, 10725493, 21450986]

約数ペア:

[(1, 21450986), (2, 10725493), (101, 212386), (103, 208262), (202, 106193), (206, 104131), (1031, 20806), (2062, 10403)]