19708978

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{2213}}^1$

素因数の和:2349

約数の個数: 16

約数和(自身を含む): 30473496

約数和(自身を除く): 10764518

約数列:

[1, 2, 61, 73, 122, 146, 2213, 4426, 4453, 8906, 134993, 161549, 269986, 323098, 9854489, 19708978]

約数ペア:

[(1, 19708978), (2, 9854489), (61, 323098), (73, 269986), (122, 161549), (146, 134993), (2213, 8906), (4426, 4453)]