17996769

素因数分解:

$3^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:307

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 13667871

約数列:

[1, 3, 7, 9, 21, 27, 49, 61, 63, 147, 183, 189, 223, 427, 441, 549, 669, 1281, 1323, 1561, 1647, 2007, 2989, 3843, 4683, 6021, 8967, 10927, 11529, 13603, 14049, 26901, 32781, 40809, 42147, 80703, 95221, 98343, 122427, 285663, 295029, 367281, 666547, 856989, 1999641, 2570967, 5998923, 17996769]

約数ペア:

[(1, 17996769), (3, 5998923), (7, 2570967), (9, 1999641), (21, 856989), (27, 666547), (49, 367281), (61, 295029), (63, 285663), (147, 122427), (183, 98343), (189, 95221), (223, 80703), (427, 42147), (441, 40809), (549, 32781), (669, 26901), (1281, 14049), (1323, 13603), (1561, 11529), (1647, 10927), (2007, 8967), (2989, 6021), (3843, 4683)]