19640506

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1\times {\mathrm{631}}^1$

素因数の和:909

約数の個数: 16

約数和(自身を含む): 30032640

約数和(自身を除く): 10392134

約数列:

[1, 2, 79, 158, 197, 394, 631, 1262, 15563, 31126, 49849, 99698, 124307, 248614, 9820253, 19640506]

約数ペア:

[(1, 19640506), (2, 9820253), (79, 248614), (158, 124307), (197, 99698), (394, 49849), (631, 31126), (1262, 15563)]