18291510680

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1118063}}^1$

素因数の和:1118483

約数の個数: 32

約数和(自身を含む): 41256561600

約数和(自身を除く): 22965050920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 8180, 16360, 1118063, 2236126, 4472252, 5590315, 8944504, 11180630, 22361260, 44722520, 457287767, 914575534, 1829151068, 2286438835, 3658302136, 4572877670, 9145755340, 18291510680]

約数ペア:

[(1, 18291510680), (2, 9145755340), (4, 4572877670), (5, 3658302136), (8, 2286438835), (10, 1829151068), (20, 914575534), (40, 457287767), (409, 44722520), (818, 22361260), (1636, 11180630), (2045, 8944504), (3272, 5590315), (4090, 4472252), (8180, 2236126), (16360, 1118063)]