18705020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22811}}^1$

素因数の和:22861

約数の個数: 24

約数和(自身を含む): 40240368

約数和(自身を除く): 21535348

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22811, 45622, 91244, 114055, 228110, 456220, 935251, 1870502, 3741004, 4676255, 9352510, 18705020]

約数ペア:

[(1, 18705020), (2, 9352510), (4, 4676255), (5, 3741004), (10, 1870502), (20, 935251), (41, 456220), (82, 228110), (164, 114055), (205, 91244), (410, 45622), (820, 22811)]