18280015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 25474176

約数和(自身を除く): 7194161

約数列:

[1, 5, 13, 17, 65, 71, 85, 221, 233, 355, 923, 1105, 1165, 1207, 3029, 3961, 4615, 6035, 15145, 15691, 16543, 19805, 51493, 78455, 82715, 215059, 257465, 281231, 1075295, 1406155, 3656003, 18280015]

約数ペア:

[(1, 18280015), (5, 3656003), (13, 1406155), (17, 1075295), (65, 281231), (71, 257465), (85, 215059), (221, 82715), (233, 78455), (355, 51493), (923, 19805), (1105, 16543), (1165, 15691), (1207, 15145), (3029, 6035), (3961, 4615)]