21451405

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:704

約数の個数: 16

約数和(自身を含む): 26535600

約数和(自身を除く): 5084195

約数列:

[1, 5, 41, 205, 269, 389, 1345, 1945, 11029, 15949, 55145, 79745, 104641, 523205, 4290281, 21451405]

約数ペア:

[(1, 21451405), (5, 4290281), (41, 523205), (205, 104641), (269, 79745), (389, 55145), (1345, 15949), (1945, 11029)]