81379540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{5521}}^1$

素因数の和:5608

約数の個数: 48

約数和(自身を含む): 189249984

約数和(自身を除く): 107870444

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1474, 2948, 3685, 5521, 7370, 11042, 14740, 22084, 27605, 55210, 60731, 110420, 121462, 242924, 303655, 369907, 607310, 739814, 1214620, 1479628, 1849535, 3699070, 4068977, 7398140, 8137954, 16275908, 20344885, 40689770, 81379540]

約数ペア:

[(1, 81379540), (2, 40689770), (4, 20344885), (5, 16275908), (10, 8137954), (11, 7398140), (20, 4068977), (22, 3699070), (44, 1849535), (55, 1479628), (67, 1214620), (110, 739814), (134, 607310), (220, 369907), (268, 303655), (335, 242924), (670, 121462), (737, 110420), (1340, 60731), (1474, 55210), (2948, 27605), (3685, 22084), (5521, 14740), (7370, 11042)]