20998604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{419}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 22184116

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 67, 68, 134, 187, 268, 374, 419, 737, 748, 838, 1139, 1474, 1676, 2278, 2948, 4556, 4609, 7123, 9218, 12529, 14246, 18436, 25058, 28073, 28492, 50116, 56146, 78353, 112292, 156706, 308803, 313412, 477241, 617606, 954482, 1235212, 1908964, 5249651, 10499302, 20998604]

約数ペア:

[(1, 20998604), (2, 10499302), (4, 5249651), (11, 1908964), (17, 1235212), (22, 954482), (34, 617606), (44, 477241), (67, 313412), (68, 308803), (134, 156706), (187, 112292), (268, 78353), (374, 56146), (419, 50116), (737, 28492), (748, 28073), (838, 25058), (1139, 18436), (1474, 14246), (1676, 12529), (2278, 9218), (2948, 7123), (4556, 4609)]