81240940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2063}}^1$

素因数の和:2262

約数の個数: 48

約数和(自身を含む): 187246080

約数和(自身を除く): 106005140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 716, 895, 1790, 1969, 2063, 3580, 3938, 4126, 7876, 8252, 9845, 10315, 19690, 20630, 22693, 39380, 41260, 45386, 90772, 113465, 226930, 369277, 453860, 738554, 1477108, 1846385, 3692770, 4062047, 7385540, 8124094, 16248188, 20310235, 40620470, 81240940]

約数ペア:

[(1, 81240940), (2, 40620470), (4, 20310235), (5, 16248188), (10, 8124094), (11, 7385540), (20, 4062047), (22, 3692770), (44, 1846385), (55, 1477108), (110, 738554), (179, 453860), (220, 369277), (358, 226930), (716, 113465), (895, 90772), (1790, 45386), (1969, 41260), (2063, 39380), (3580, 22693), (3938, 20630), (4126, 19690), (7876, 10315), (8252, 9845)]