18391165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 24950016

約数和(自身を除く): 6558851

約数列:

[1, 5, 13, 41, 65, 67, 103, 205, 335, 515, 533, 871, 1339, 2665, 2747, 4223, 4355, 6695, 6901, 13735, 21115, 34505, 35711, 54899, 89713, 178555, 274495, 282941, 448565, 1414705, 3678233, 18391165]

約数ペア:

[(1, 18391165), (5, 3678233), (13, 1414705), (41, 448565), (65, 282941), (67, 274495), (103, 178555), (205, 89713), (335, 54899), (515, 35711), (533, 34505), (871, 21115), (1339, 13735), (2665, 6901), (2747, 6695), (4223, 4355)]