20756405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{2161}}^1$

素因数の和:2296

約数の個数: 16

約数和(自身を含む): 26618544

約数和(自身を除く): 5862139

約数列:

[1, 5, 17, 85, 113, 565, 1921, 2161, 9605, 10805, 36737, 183685, 244193, 1220965, 4151281, 20756405]

約数ペア:

[(1, 20756405), (5, 4151281), (17, 1220965), (85, 244193), (113, 183685), (565, 36737), (1921, 10805), (2161, 9605)]