81437180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{370169}}^1$

素因数の和:370189

約数の個数: 24

約数和(自身を含む): 186565680

約数和(自身を除く): 105128500

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 370169, 740338, 1480676, 1850845, 3701690, 4071859, 7403380, 8143718, 16287436, 20359295, 40718590, 81437180]

約数ペア:

[(1, 81437180), (2, 40718590), (4, 20359295), (5, 16287436), (10, 8143718), (11, 7403380), (20, 4071859), (22, 3701690), (44, 1850845), (55, 1480676), (110, 740338), (220, 370169)]