18028815

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1291}}^1$

素因数の和:1332

約数の個数: 48

約数和(自身を含む): 35349120

約数和(自身を除く): 17320305

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1291, 1995, 2793, 3873, 4655, 6455, 9037, 13965, 19365, 24529, 27111, 45185, 63259, 73587, 122645, 135555, 171703, 189777, 316295, 367935, 515109, 858515, 948885, 1201921, 2575545, 3605763, 6009605, 18028815]

約数ペア:

[(1, 18028815), (3, 6009605), (5, 3605763), (7, 2575545), (15, 1201921), (19, 948885), (21, 858515), (35, 515109), (49, 367935), (57, 316295), (95, 189777), (105, 171703), (133, 135555), (147, 122645), (245, 73587), (285, 63259), (399, 45185), (665, 27111), (735, 24529), (931, 19365), (1291, 13965), (1995, 9037), (2793, 6455), (3873, 4655)]