20673405

素因数分解:

$3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1181}}^1$

素因数の和:1581

約数の個数: 24

約数和(自身を含む): 35956440

約数和(自身を除く): 15283035

約数列:

[1, 3, 5, 9, 15, 45, 389, 1167, 1181, 1945, 3501, 3543, 5835, 5905, 10629, 17505, 17715, 53145, 459409, 1378227, 2297045, 4134681, 6891135, 20673405]

約数ペア:

[(1, 20673405), (3, 6891135), (5, 4134681), (9, 2297045), (15, 1378227), (45, 459409), (389, 53145), (1167, 17715), (1181, 17505), (1945, 10629), (3501, 5905), (3543, 5835)]