21746530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^2$

素因数の和:838

約数の個数: 24

約数和(自身を含む): 42258132

約数和(自身を除く): 20511602

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 409, 818, 2045, 4090, 5317, 10634, 26585, 53170, 167281, 334562, 836405, 1672810, 2174653, 4349306, 10873265, 21746530]

約数ペア:

[(1, 21746530), (2, 10873265), (5, 4349306), (10, 2174653), (13, 1672810), (26, 836405), (65, 334562), (130, 167281), (409, 53170), (818, 26585), (2045, 10634), (4090, 5317)]