210004120

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{66457}}^1$

素因数の和:66547

約数の個数: 32

約数和(自身を含む): 478497600

約数和(自身を除く): 268493480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 66457, 132914, 265828, 332285, 531656, 664570, 1329140, 2658280, 5250103, 10500206, 21000412, 26250515, 42000824, 52501030, 105002060, 210004120]

約数ペア:

[(1, 210004120), (2, 105002060), (4, 52501030), (5, 42000824), (8, 26250515), (10, 21000412), (20, 10500206), (40, 5250103), (79, 2658280), (158, 1329140), (316, 664570), (395, 531656), (632, 332285), (790, 265828), (1580, 132914), (3160, 66457)]