20640990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{14639}}^1$

素因数の和:14696

約数の個数: 32

約数和(自身を含む): 50595840

約数和(自身を除く): 29954850

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 94, 141, 235, 282, 470, 705, 1410, 14639, 29278, 43917, 73195, 87834, 146390, 219585, 439170, 688033, 1376066, 2064099, 3440165, 4128198, 6880330, 10320495, 20640990]

約数ペア:

[(1, 20640990), (2, 10320495), (3, 6880330), (5, 4128198), (6, 3440165), (10, 2064099), (15, 1376066), (30, 688033), (47, 439170), (94, 219585), (141, 146390), (235, 87834), (282, 73195), (470, 43917), (705, 29278), (1410, 14639)]