18189903

素因数分解:

$3^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 25753728

約数和(自身を除く): 7563825

約数列:

[1, 3, 37, 43, 103, 111, 129, 309, 1369, 1591, 3811, 4107, 4429, 4773, 11433, 13287, 58867, 141007, 163873, 176601, 423021, 491619, 6063301, 18189903]

約数ペア:

[(1, 18189903), (3, 6063301), (37, 491619), (43, 423021), (103, 176601), (111, 163873), (129, 141007), (309, 58867), (1369, 13287), (1591, 11433), (3811, 4773), (4107, 4429)]