17938505

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 32

約数和(自身を含む): 24675840

約数和(自身を除く): 6737335

約数列:

[1, 5, 13, 23, 65, 71, 115, 169, 299, 355, 845, 923, 1495, 1633, 2197, 3887, 4615, 8165, 10985, 11999, 19435, 21229, 50531, 59995, 106145, 155987, 252655, 275977, 779935, 1379885, 3587701, 17938505]

約数ペア:

[(1, 17938505), (5, 3587701), (13, 1379885), (23, 779935), (65, 275977), (71, 252655), (115, 155987), (169, 106145), (299, 59995), (355, 50531), (845, 21229), (923, 19435), (1495, 11999), (1633, 10985), (2197, 8165), (3887, 4615)]