20980168

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{569}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 43092000

約数和(自身を除く): 22111832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 419, 569, 838, 1138, 1676, 2276, 3352, 4552, 4609, 6259, 9218, 12518, 18436, 25036, 36872, 50072, 238411, 476822, 953644, 1907288, 2622521, 5245042, 10490084, 20980168]

約数ペア:

[(1, 20980168), (2, 10490084), (4, 5245042), (8, 2622521), (11, 1907288), (22, 953644), (44, 476822), (88, 238411), (419, 50072), (569, 36872), (838, 25036), (1138, 18436), (1676, 12518), (2276, 9218), (3352, 6259), (4552, 4609)]