21362289

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 32686080

約数和(自身を除く): 11323791

約数列:

[1, 3, 13, 19, 39, 57, 127, 227, 247, 381, 681, 741, 1651, 2413, 2951, 4313, 4953, 7239, 8853, 12939, 28829, 31369, 56069, 86487, 94107, 168207, 374777, 547751, 1124331, 1643253, 7120763, 21362289]

約数ペア:

[(1, 21362289), (3, 7120763), (13, 1643253), (19, 1124331), (39, 547751), (57, 374777), (127, 168207), (227, 94107), (247, 86487), (381, 56069), (681, 31369), (741, 28829), (1651, 12939), (2413, 8853), (2951, 7239), (4313, 4953)]