21987306

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{379}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 52284960

約数和(自身を除く): 30297654

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 293, 379, 586, 758, 879, 1137, 1758, 2274, 2637, 3223, 3411, 4169, 5274, 6446, 6822, 8338, 9669, 12507, 19338, 25014, 29007, 37521, 58014, 75042, 111047, 222094, 333141, 666282, 999423, 1221517, 1998846, 2443034, 3664551, 7329102, 10993653, 21987306]

約数ペア:

[(1, 21987306), (2, 10993653), (3, 7329102), (6, 3664551), (9, 2443034), (11, 1998846), (18, 1221517), (22, 999423), (33, 666282), (66, 333141), (99, 222094), (198, 111047), (293, 75042), (379, 58014), (586, 37521), (758, 29007), (879, 25014), (1137, 19338), (1758, 12507), (2274, 9669), (2637, 8338), (3223, 6822), (3411, 6446), (4169, 5274)]