21385837

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{617}}^1$

素因数の和:788

約数の個数: 16

約数和(自身を含む): 24561792

約数和(自身を除く): 3175955

約数列:

[1, 11, 23, 137, 253, 617, 1507, 3151, 6787, 14191, 34661, 84529, 156101, 929819, 1944167, 21385837]

約数ペア:

[(1, 21385837), (11, 1944167), (23, 929819), (137, 156101), (253, 84529), (617, 34661), (1507, 14191), (3151, 6787)]