388514815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{281}}^1$

素因数の和:627

約数の個数: 32

約数和(自身を含む): 511660800

約数和(自身を除く): 123145985

約数列:

[1, 5, 13, 65, 89, 239, 281, 445, 1157, 1195, 1405, 3107, 3653, 5785, 15535, 18265, 21271, 25009, 67159, 106355, 125045, 276523, 325117, 335795, 873067, 1382615, 1625585, 4365335, 5977151, 29885755, 77702963, 388514815]

約数ペア:

[(1, 388514815), (5, 77702963), (13, 29885755), (65, 5977151), (89, 4365335), (239, 1625585), (281, 1382615), (445, 873067), (1157, 335795), (1195, 325117), (1405, 276523), (3107, 125045), (3653, 106355), (5785, 67159), (15535, 25009), (18265, 21271)]