21488781945

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33315941}}^1$

素因数の和:33315992

約数の個数: 16

約数和(自身を含む): 35181634752

約数和(自身を除く): 13692852807

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 33315941, 99947823, 166579705, 499739115, 1432585463, 4297756389, 7162927315, 21488781945]

約数ペア:

[(1, 21488781945), (3, 7162927315), (5, 4297756389), (15, 1432585463), (43, 499739115), (129, 166579705), (215, 99947823), (645, 33315941)]