18216620

素因数分解:

$2^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{3361}}^1$

素因数の和:3641

約数の個数: 24

約数和(自身を含む): 38407488

約数和(自身を除く): 20190868

約数列:

[1, 2, 4, 5, 10, 20, 271, 542, 1084, 1355, 2710, 3361, 5420, 6722, 13444, 16805, 33610, 67220, 910831, 1821662, 3643324, 4554155, 9108310, 18216620]

約数ペア:

[(1, 18216620), (2, 9108310), (4, 4554155), (5, 3643324), (10, 1821662), (20, 910831), (271, 67220), (542, 33610), (1084, 16805), (1355, 13444), (2710, 6722), (3361, 5420)]