20981198

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{2833}}^1$

素因数の和:2888

約数の個数: 24

約数和(自身を含む): 37612848

約数和(自身を除く): 16631650

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 529, 1058, 2833, 3703, 5666, 7406, 19831, 39662, 65159, 130318, 456113, 912226, 1498657, 2997314, 10490599, 20981198]

約数ペア:

[(1, 20981198), (2, 10490599), (7, 2997314), (14, 1498657), (23, 912226), (46, 456113), (161, 130318), (322, 65159), (529, 39662), (1058, 19831), (2833, 7406), (3703, 5666)]