80991100

素因数分解:

$2^2\times 5^2\times {\mathrm{659}}^1\times {\mathrm{1229}}^1$

素因数の和:1902

約数の個数: 36

約数和(自身を含む): 176160600

約数和(自身を除く): 95169500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 659, 1229, 1318, 2458, 2636, 3295, 4916, 6145, 6590, 12290, 13180, 16475, 24580, 30725, 32950, 61450, 65900, 122900, 809911, 1619822, 3239644, 4049555, 8099110, 16198220, 20247775, 40495550, 80991100]

約数ペア:

[(1, 80991100), (2, 40495550), (4, 20247775), (5, 16198220), (10, 8099110), (20, 4049555), (25, 3239644), (50, 1619822), (100, 809911), (659, 122900), (1229, 65900), (1318, 61450), (2458, 32950), (2636, 30725), (3295, 24580), (4916, 16475), (6145, 13180), (6590, 12290)]