19817968

素因数分解:

$2^4\times {\mathrm{709}}^1\times {\mathrm{1747}}^1$

素因数の和:2464

約数の個数: 20

約数和(自身を含む): 38473480

約数和(自身を除く): 18655512

約数列:

[1, 2, 4, 8, 16, 709, 1418, 1747, 2836, 3494, 5672, 6988, 11344, 13976, 27952, 1238623, 2477246, 4954492, 9908984, 19817968]

約数ペア:

[(1, 19817968), (2, 9908984), (4, 4954492), (8, 2477246), (16, 1238623), (709, 27952), (1418, 13976), (1747, 11344), (2836, 6988), (3494, 5672)]