81467920

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^2\times {\mathrm{461}}^1$

素因数の和:568

約数の個数: 60

約数和(自身を含む): 193948524

約数和(自身を除く): 112480604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 461, 470, 752, 922, 940, 1844, 1880, 2209, 2305, 3688, 3760, 4418, 4610, 7376, 8836, 9220, 11045, 17672, 18440, 21667, 22090, 35344, 36880, 43334, 44180, 86668, 88360, 108335, 173336, 176720, 216670, 346672, 433340, 866680, 1018349, 1733360, 2036698, 4073396, 5091745, 8146792, 10183490, 16293584, 20366980, 40733960, 81467920]

約数ペア:

[(1, 81467920), (2, 40733960), (4, 20366980), (5, 16293584), (8, 10183490), (10, 8146792), (16, 5091745), (20, 4073396), (40, 2036698), (47, 1733360), (80, 1018349), (94, 866680), (188, 433340), (235, 346672), (376, 216670), (461, 176720), (470, 173336), (752, 108335), (922, 88360), (940, 86668), (1844, 44180), (1880, 43334), (2209, 36880), (2305, 35344), (3688, 22090), (3760, 21667), (4418, 18440), (4610, 17672), (7376, 11045), (8836, 9220)]