21759405

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85331}}^1$

素因数の和:85356

約数の個数: 16

約数和(自身を含む): 36863424

約数和(自身を除く): 15104019

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85331, 255993, 426655, 1279965, 1450627, 4351881, 7253135, 21759405]

約数ペア:

[(1, 21759405), (3, 7253135), (5, 4351881), (15, 1450627), (17, 1279965), (51, 426655), (85, 255993), (255, 85331)]