21630345

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{389}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 37964160

約数和(自身を除く): 16333815

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 337, 389, 1011, 1167, 1685, 1945, 3707, 4279, 5055, 5835, 11121, 12837, 18535, 21395, 55605, 64185, 131093, 393279, 655465, 1442023, 1966395, 4326069, 7210115, 21630345]

約数ペア:

[(1, 21630345), (3, 7210115), (5, 4326069), (11, 1966395), (15, 1442023), (33, 655465), (55, 393279), (165, 131093), (337, 64185), (389, 55605), (1011, 21395), (1167, 18535), (1685, 12837), (1945, 11121), (3707, 5835), (4279, 5055)]