18858580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72533}}^1$

素因数の和:72555

約数の個数: 24

約数和(自身を含む): 42649992

約数和(自身を除く): 23791412

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72533, 145066, 290132, 362665, 725330, 942929, 1450660, 1885858, 3771716, 4714645, 9429290, 18858580]

約数ペア:

[(1, 18858580), (2, 9429290), (4, 4714645), (5, 3771716), (10, 1885858), (13, 1450660), (20, 942929), (26, 725330), (52, 362665), (65, 290132), (130, 145066), (260, 72533)]