28722915

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1327}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 55106688

約数和(自身を除く): 26383773

約数列:

[1, 3, 5, 9, 13, 15, 37, 39, 45, 65, 111, 117, 185, 195, 333, 481, 555, 585, 1327, 1443, 1665, 2405, 3981, 4329, 6635, 7215, 11943, 17251, 19905, 21645, 49099, 51753, 59715, 86255, 147297, 155259, 245495, 258765, 441891, 638287, 736485, 776295, 1914861, 2209455, 3191435, 5744583, 9574305, 28722915]

約数ペア:

[(1, 28722915), (3, 9574305), (5, 5744583), (9, 3191435), (13, 2209455), (15, 1914861), (37, 776295), (39, 736485), (45, 638287), (65, 441891), (111, 258765), (117, 245495), (185, 155259), (195, 147297), (333, 86255), (481, 59715), (555, 51753), (585, 49099), (1327, 21645), (1443, 19905), (1665, 17251), (2405, 11943), (3981, 7215), (4329, 6635)]