20784405

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{20681}}^1$

素因数の和:20756

約数の個数: 16

約数和(自身を含む): 33753024

約数和(自身を除く): 12968619

約数列:

[1, 3, 5, 15, 67, 201, 335, 1005, 20681, 62043, 103405, 310215, 1385627, 4156881, 6928135, 20784405]

約数ペア:

[(1, 20784405), (3, 6928135), (5, 4156881), (15, 1385627), (67, 310215), (201, 103405), (335, 62043), (1005, 20681)]