81741880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5021}}^1$

素因数の和:5080

約数の個数: 64

約数和(自身を含む): 206102880

約数和(自身を除く): 124361000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1480, 1628, 2035, 3256, 4070, 5021, 8140, 10042, 16280, 20084, 25105, 40168, 50210, 55231, 100420, 110462, 185777, 200840, 220924, 276155, 371554, 441848, 552310, 743108, 928885, 1104620, 1486216, 1857770, 2043547, 2209240, 3715540, 4087094, 7431080, 8174188, 10217735, 16348376, 20435470, 40870940, 81741880]

約数ペア:

[(1, 81741880), (2, 40870940), (4, 20435470), (5, 16348376), (8, 10217735), (10, 8174188), (11, 7431080), (20, 4087094), (22, 3715540), (37, 2209240), (40, 2043547), (44, 1857770), (55, 1486216), (74, 1104620), (88, 928885), (110, 743108), (148, 552310), (185, 441848), (220, 371554), (296, 276155), (370, 220924), (407, 200840), (440, 185777), (740, 110462), (814, 100420), (1480, 55231), (1628, 50210), (2035, 40168), (3256, 25105), (4070, 20084), (5021, 16280), (8140, 10042)]