20366980

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^2\times {\mathrm{461}}^1$

素因数の和:564

約数の個数: 36

約数和(自身を含む): 43794828

約数和(自身を除く): 23427848

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 461, 470, 922, 940, 1844, 2209, 2305, 4418, 4610, 8836, 9220, 11045, 21667, 22090, 43334, 44180, 86668, 108335, 216670, 433340, 1018349, 2036698, 4073396, 5091745, 10183490, 20366980]

約数ペア:

[(1, 20366980), (2, 10183490), (4, 5091745), (5, 4073396), (10, 2036698), (20, 1018349), (47, 433340), (94, 216670), (188, 108335), (235, 86668), (461, 44180), (470, 43334), (922, 22090), (940, 21667), (1844, 11045), (2209, 9220), (2305, 8836), (4418, 4610)]