81912820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:433

約数の個数: 96

約数和(自身を含む): 199946880

約数和(自身を除く): 118034060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 37, 44, 55, 58, 74, 110, 116, 145, 148, 185, 220, 290, 319, 347, 370, 407, 580, 638, 694, 740, 814, 1073, 1276, 1388, 1595, 1628, 1735, 2035, 2146, 3190, 3470, 3817, 4070, 4292, 5365, 6380, 6940, 7634, 8140, 10063, 10730, 11803, 12839, 15268, 19085, 20126, 21460, 23606, 25678, 38170, 40252, 47212, 50315, 51356, 59015, 64195, 76340, 100630, 110693, 118030, 128390, 141229, 201260, 221386, 236060, 256780, 282458, 372331, 442772, 553465, 564916, 706145, 744662, 1106930, 1412290, 1489324, 1861655, 2213860, 2824580, 3723310, 4095641, 7446620, 8191282, 16382564, 20478205, 40956410, 81912820]

約数ペア:

[(1, 81912820), (2, 40956410), (4, 20478205), (5, 16382564), (10, 8191282), (11, 7446620), (20, 4095641), (22, 3723310), (29, 2824580), (37, 2213860), (44, 1861655), (55, 1489324), (58, 1412290), (74, 1106930), (110, 744662), (116, 706145), (145, 564916), (148, 553465), (185, 442772), (220, 372331), (290, 282458), (319, 256780), (347, 236060), (370, 221386), (407, 201260), (580, 141229), (638, 128390), (694, 118030), (740, 110693), (814, 100630), (1073, 76340), (1276, 64195), (1388, 59015), (1595, 51356), (1628, 50315), (1735, 47212), (2035, 40252), (2146, 38170), (3190, 25678), (3470, 23606), (3817, 21460), (4070, 20126), (4292, 19085), (5365, 15268), (6380, 12839), (6940, 11803), (7634, 10730), (8140, 10063)]