18616941

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 32880640

約数和(自身を除く): 14263699

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 103, 133, 151, 171, 309, 399, 453, 721, 927, 1057, 1197, 1359, 1957, 2163, 2869, 3171, 5871, 6489, 8607, 9513, 13699, 15553, 17613, 20083, 25821, 41097, 46659, 60249, 108871, 123291, 139977, 180747, 295507, 326613, 886521, 979839, 2068549, 2659563, 6205647, 18616941]

約数ペア:

[(1, 18616941), (3, 6205647), (7, 2659563), (9, 2068549), (19, 979839), (21, 886521), (57, 326613), (63, 295507), (103, 180747), (133, 139977), (151, 123291), (171, 108871), (309, 60249), (399, 46659), (453, 41097), (721, 25821), (927, 20083), (1057, 17613), (1197, 15553), (1359, 13699), (1957, 9513), (2163, 8607), (2869, 6489), (3171, 5871)]