18405849

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 33454080

約数和(自身を除く): 15048231

約数列:

[1, 3, 7, 11, 17, 21, 33, 43, 51, 77, 109, 119, 129, 187, 231, 301, 327, 357, 473, 561, 731, 763, 903, 1199, 1309, 1419, 1853, 2193, 2289, 3311, 3597, 3927, 4687, 5117, 5559, 8041, 8393, 9933, 12971, 14061, 15351, 20383, 24123, 25179, 32809, 38913, 51557, 56287, 61149, 79679, 98427, 142681, 154671, 168861, 239037, 360899, 428043, 557753, 876469, 1082697, 1673259, 2629407, 6135283, 18405849]

約数ペア:

[(1, 18405849), (3, 6135283), (7, 2629407), (11, 1673259), (17, 1082697), (21, 876469), (33, 557753), (43, 428043), (51, 360899), (77, 239037), (109, 168861), (119, 154671), (129, 142681), (187, 98427), (231, 79679), (301, 61149), (327, 56287), (357, 51557), (473, 38913), (561, 32809), (731, 25179), (763, 24123), (903, 20383), (1199, 15351), (1309, 14061), (1419, 12971), (1853, 9933), (2193, 8393), (2289, 8041), (3311, 5559), (3597, 5117), (3927, 4687)]