80012900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{72739}}^1$

素因数の和:72764

約数の個数: 36

約数和(自身を含む): 189414960

約数和(自身を除く): 109402060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 72739, 145478, 290956, 363695, 727390, 800129, 1454780, 1600258, 1818475, 3200516, 3636950, 4000645, 7273900, 8001290, 16002580, 20003225, 40006450, 80012900]

約数ペア:

[(1, 80012900), (2, 40006450), (4, 20003225), (5, 16002580), (10, 8001290), (11, 7273900), (20, 4000645), (22, 3636950), (25, 3200516), (44, 1818475), (50, 1600258), (55, 1454780), (100, 800129), (110, 727390), (220, 363695), (275, 290956), (550, 145478), (1100, 72739)]