21171345

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108571}}^1$

素因数の和:108592

約数の個数: 16

約数和(自身を含む): 36480192

約数和(自身を除く): 15308847

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108571, 325713, 542855, 1411423, 1628565, 4234269, 7057115, 21171345]

約数ペア:

[(1, 21171345), (3, 7057115), (5, 4234269), (13, 1628565), (15, 1411423), (39, 542855), (65, 325713), (195, 108571)]