80246020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97861}}^1$

素因数の和:97911

約数の個数: 24

約数和(自身を含む): 172628568

約数和(自身を除く): 92382548

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 97861, 195722, 391444, 489305, 978610, 1957220, 4012301, 8024602, 16049204, 20061505, 40123010, 80246020]

約数ペア:

[(1, 80246020), (2, 40123010), (4, 20061505), (5, 16049204), (10, 8024602), (20, 4012301), (41, 1957220), (82, 978610), (164, 489305), (205, 391444), (410, 195722), (820, 97861)]