18903651

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 28976640

約数和(自身を除く): 10072989

約数列:

[1, 3, 13, 19, 39, 57, 97, 247, 263, 291, 741, 789, 1261, 1843, 3419, 3783, 4997, 5529, 10257, 14991, 23959, 25511, 64961, 71877, 76533, 194883, 331643, 484709, 994929, 1454127, 6301217, 18903651]

約数ペア:

[(1, 18903651), (3, 6301217), (13, 1454127), (19, 994929), (39, 484709), (57, 331643), (97, 194883), (247, 76533), (263, 71877), (291, 64961), (741, 25511), (789, 23959), (1261, 14991), (1843, 10257), (3419, 5529), (3783, 4997)]