18990699

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{5351}}^1$

素因数の和:5387

約数の個数: 24

約数和(自身を含む): 31341312

約数和(自身を除く): 12350613

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 5351, 16053, 37457, 69563, 112371, 208689, 486941, 904319, 1460823, 2712957, 6330233, 18990699]

約数ペア:

[(1, 18990699), (3, 6330233), (7, 2712957), (13, 1460823), (21, 904319), (39, 486941), (91, 208689), (169, 112371), (273, 69563), (507, 37457), (1183, 16053), (3549, 5351)]