20571920

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1877}}^1$

素因数の和:2027

約数の個数: 40

約数和(自身を含む): 48204504

約数和(自身を除く): 27632584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1877, 2192, 2740, 3754, 5480, 7508, 9385, 10960, 15016, 18770, 30032, 37540, 75080, 150160, 257149, 514298, 1028596, 1285745, 2057192, 2571490, 4114384, 5142980, 10285960, 20571920]

約数ペア:

[(1, 20571920), (2, 10285960), (4, 5142980), (5, 4114384), (8, 2571490), (10, 2057192), (16, 1285745), (20, 1028596), (40, 514298), (80, 257149), (137, 150160), (274, 75080), (548, 37540), (685, 30032), (1096, 18770), (1370, 15016), (1877, 10960), (2192, 9385), (2740, 7508), (3754, 5480)]