19912257

素因数分解:

$3^3\times {\mathrm{97}}^1\times {\mathrm{7603}}^1$

素因数の和:7709

約数の個数: 16

約数和(自身を含む): 29807680

約数和(自身を除く): 9895423

約数列:

[1, 3, 9, 27, 97, 291, 873, 2619, 7603, 22809, 68427, 205281, 737491, 2212473, 6637419, 19912257]

約数ペア:

[(1, 19912257), (3, 6637419), (9, 2212473), (27, 737491), (97, 205281), (291, 68427), (873, 22809), (2619, 7603)]