19745551

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{2273}}^1$

素因数の和:2370

約数の個数: 16

約数和(自身を含む): 24231744

約数和(自身を除く): 4486193

約数列:

[1, 7, 17, 73, 119, 511, 1241, 2273, 8687, 15911, 38641, 165929, 270487, 1161503, 2820793, 19745551]

約数ペア:

[(1, 19745551), (7, 2820793), (17, 1161503), (73, 270487), (119, 165929), (511, 38641), (1241, 15911), (2273, 8687)]