18867849

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 34664448

約数和(自身を除く): 15796599

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 61, 77, 91, 103, 143, 183, 231, 273, 309, 427, 429, 671, 721, 793, 1001, 1133, 1281, 1339, 2013, 2163, 2379, 3003, 3399, 4017, 4697, 5551, 6283, 7931, 8723, 9373, 14091, 14729, 16653, 18849, 23793, 26169, 28119, 43981, 44187, 61061, 69113, 81679, 103103, 131943, 183183, 207339, 245037, 309309, 483791, 571753, 898469, 1451373, 1715259, 2695407, 6289283, 18867849]

約数ペア:

[(1, 18867849), (3, 6289283), (7, 2695407), (11, 1715259), (13, 1451373), (21, 898469), (33, 571753), (39, 483791), (61, 309309), (77, 245037), (91, 207339), (103, 183183), (143, 131943), (183, 103103), (231, 81679), (273, 69113), (309, 61061), (427, 44187), (429, 43981), (671, 28119), (721, 26169), (793, 23793), (1001, 18849), (1133, 16653), (1281, 14729), (1339, 14091), (2013, 9373), (2163, 8723), (2379, 7931), (3003, 6283), (3399, 5551), (4017, 4697)]