256217845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{9929}}^1$

素因数の和:10344

約数の個数: 16

約数和(自身を含む): 331979760

約数和(自身を除く): 75761915

約数列:

[1, 5, 13, 65, 397, 1985, 5161, 9929, 25805, 49645, 129077, 645385, 3941813, 19709065, 51243569, 256217845]

約数ペア:

[(1, 256217845), (5, 51243569), (13, 19709065), (65, 3941813), (397, 645385), (1985, 129077), (5161, 49645), (9929, 25805)]