20958500

素因数分解:

$2^2\times 5^3\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:437

約数の個数: 48

約数和(自身を含む): 46230912

約数和(自身を除く): 25272412

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 167, 250, 251, 334, 500, 502, 668, 835, 1004, 1255, 1670, 2510, 3340, 4175, 5020, 6275, 8350, 12550, 16700, 20875, 25100, 31375, 41750, 41917, 62750, 83500, 83834, 125500, 167668, 209585, 419170, 838340, 1047925, 2095850, 4191700, 5239625, 10479250, 20958500]

約数ペア:

[(1, 20958500), (2, 10479250), (4, 5239625), (5, 4191700), (10, 2095850), (20, 1047925), (25, 838340), (50, 419170), (100, 209585), (125, 167668), (167, 125500), (250, 83834), (251, 83500), (334, 62750), (500, 41917), (502, 41750), (668, 31375), (835, 25100), (1004, 20875), (1255, 16700), (1670, 12550), (2510, 8350), (3340, 6275), (4175, 5020)]