20189802017

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{811}}^1\times {\mathrm{14057}}^1$

素因数の和:14909

約数の個数: 32

約数和(自身を含む): 26300381184

約数和(自身を除く): 6110579167

約数列:

[1, 7, 11, 23, 77, 161, 253, 811, 1771, 5677, 8921, 14057, 18653, 62447, 98399, 130571, 154627, 205183, 323311, 1082389, 1436281, 2263177, 3556421, 11400227, 24894947, 79801589, 125402497, 262205221, 877817479, 1835436547, 2884257431, 20189802017]

約数ペア:

[(1, 20189802017), (7, 2884257431), (11, 1835436547), (23, 877817479), (77, 262205221), (161, 125402497), (253, 79801589), (811, 24894947), (1771, 11400227), (5677, 3556421), (8921, 2263177), (14057, 1436281), (18653, 1082389), (62447, 323311), (98399, 205183), (130571, 154627)]