20090213

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 24191136

約数和(自身を除く): 4100923

約数列:

[1, 11, 13, 101, 107, 143, 169, 1111, 1177, 1313, 1391, 1859, 10807, 14443, 15301, 17069, 18083, 118877, 140491, 187759, 198913, 1545401, 1826383, 20090213]

約数ペア:

[(1, 20090213), (11, 1826383), (13, 1545401), (101, 198913), (107, 187759), (143, 140491), (169, 118877), (1111, 18083), (1177, 17069), (1313, 15301), (1391, 14443), (1859, 10807)]