18443815

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 32

約数和(自身を含む): 25361280

約数和(自身を除く): 6917465

約数列:

[1, 5, 13, 23, 65, 73, 115, 169, 299, 365, 845, 949, 1495, 1679, 2197, 3887, 4745, 8395, 10985, 12337, 19435, 21827, 50531, 61685, 109135, 160381, 252655, 283751, 801905, 1418755, 3688763, 18443815]

約数ペア:

[(1, 18443815), (5, 3688763), (13, 1418755), (23, 801905), (65, 283751), (73, 252655), (115, 160381), (169, 109135), (299, 61685), (365, 50531), (845, 21827), (949, 19435), (1495, 12337), (1679, 10985), (2197, 8395), (3887, 4745)]