81349180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1877}}^1$

素因数の和:2094

約数の個数: 48

約数和(自身を含む): 187409376

約数和(自身を除く): 106060196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 1877, 1970, 2167, 3754, 3940, 4334, 7508, 8668, 9385, 10835, 18770, 20647, 21670, 37540, 41294, 43340, 82588, 103235, 206470, 369769, 412940, 739538, 1479076, 1848845, 3697690, 4067459, 7395380, 8134918, 16269836, 20337295, 40674590, 81349180]

約数ペア:

[(1, 81349180), (2, 40674590), (4, 20337295), (5, 16269836), (10, 8134918), (11, 7395380), (20, 4067459), (22, 3697690), (44, 1848845), (55, 1479076), (110, 739538), (197, 412940), (220, 369769), (394, 206470), (788, 103235), (985, 82588), (1877, 43340), (1970, 41294), (2167, 37540), (3754, 21670), (3940, 20647), (4334, 18770), (7508, 10835), (8668, 9385)]