981820225

素因数分解:

$5^2\times {\mathrm{109}}^1\times {\mathrm{571}}^1\times {\mathrm{631}}^1$

素因数の和:1321

約数の個数: 24

約数和(自身を含む): 1232728640

約数和(自身を除く): 250908415

約数列:

[1, 5, 25, 109, 545, 571, 631, 2725, 2855, 3155, 14275, 15775, 62239, 68779, 311195, 343895, 360301, 1555975, 1719475, 1801505, 9007525, 39272809, 196364045, 981820225]

約数ペア:

[(1, 981820225), (5, 196364045), (25, 39272809), (109, 9007525), (545, 1801505), (571, 1719475), (631, 1555975), (2725, 360301), (2855, 343895), (3155, 311195), (14275, 68779), (15775, 62239)]