81903580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{372289}}^1$

素因数の和:372309

約数の個数: 24

約数和(自身を含む): 187634160

約数和(自身を除く): 105730580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 372289, 744578, 1489156, 1861445, 3722890, 4095179, 7445780, 8190358, 16380716, 20475895, 40951790, 81903580]

約数ペア:

[(1, 81903580), (2, 40951790), (4, 20475895), (5, 16380716), (10, 8190358), (11, 7445780), (20, 4095179), (22, 3722890), (44, 1861445), (55, 1489156), (110, 744578), (220, 372289)]