20618235

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1856

約数の個数: 48

約数和(自身を含む): 40704768

約数和(自身を除く): 20086533

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 165, 207, 253, 345, 495, 759, 1035, 1265, 1811, 2277, 3795, 5433, 9055, 11385, 16299, 19921, 27165, 41653, 59763, 81495, 99605, 124959, 179289, 208265, 298815, 374877, 458183, 624795, 896445, 1374549, 1874385, 2290915, 4123647, 6872745, 20618235]

約数ペア:

[(1, 20618235), (3, 6872745), (5, 4123647), (9, 2290915), (11, 1874385), (15, 1374549), (23, 896445), (33, 624795), (45, 458183), (55, 374877), (69, 298815), (99, 208265), (115, 179289), (165, 124959), (207, 99605), (253, 81495), (345, 59763), (495, 41653), (759, 27165), (1035, 19921), (1265, 16299), (1811, 11385), (2277, 9055), (3795, 5433)]