28779009

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{18773}}^1$

素因数の和:18856

約数の個数: 16

約数和(自身を含む): 44456832

約数和(自身を除く): 15677823

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 18773, 56319, 131411, 394233, 1370429, 4111287, 9593003, 28779009]

約数ペア:

[(1, 28779009), (3, 9593003), (7, 4111287), (21, 1370429), (73, 394233), (219, 131411), (511, 56319), (1533, 18773)]