21312333

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 37180416

約数和(自身を除く): 15868083

約数列:

[1, 3, 7, 9, 21, 37, 41, 63, 111, 123, 223, 259, 287, 333, 369, 669, 777, 861, 1517, 1561, 2007, 2331, 2583, 4551, 4683, 8251, 9143, 10619, 13653, 14049, 24753, 27429, 31857, 57757, 64001, 74259, 82287, 95571, 173271, 192003, 338291, 519813, 576009, 1014873, 2368037, 3044619, 7104111, 21312333]

約数ペア:

[(1, 21312333), (3, 7104111), (7, 3044619), (9, 2368037), (21, 1014873), (37, 576009), (41, 519813), (63, 338291), (111, 192003), (123, 173271), (223, 95571), (259, 82287), (287, 74259), (333, 64001), (369, 57757), (669, 31857), (777, 27429), (861, 24753), (1517, 14049), (1561, 13653), (2007, 10619), (2331, 9143), (2583, 8251), (4551, 4683)]