20520405

素因数分解:

$3^3\times 5^1\times {\mathrm{152003}}^1$

素因数の和:152017

約数の個数: 16

約数和(自身を含む): 36480960

約数和(自身を除く): 15960555

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 152003, 456009, 760015, 1368027, 2280045, 4104081, 6840135, 20520405]

約数ペア:

[(1, 20520405), (3, 6840135), (5, 4104081), (9, 2280045), (15, 1368027), (27, 760015), (45, 456009), (135, 152003)]