621520137

素因数分解:

$3^2\times 7^1\times {\mathrm{719}}^1\times {\mathrm{13721}}^1$

素因数の和:14453

約数の個数: 24

約数和(自身を含む): 1027503360

約数和(自身を除く): 405983223

約数列:

[1, 3, 7, 9, 21, 63, 719, 2157, 5033, 6471, 13721, 15099, 41163, 45297, 96047, 123489, 288141, 864423, 9865399, 29596197, 69057793, 88788591, 207173379, 621520137]

約数ペア:

[(1, 621520137), (3, 207173379), (7, 88788591), (9, 69057793), (21, 29596197), (63, 9865399), (719, 864423), (2157, 288141), (5033, 123489), (6471, 96047), (13721, 45297), (15099, 41163)]