201981955

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{198997}}^1$

素因数の和:199038

約数の個数: 16

約数和(自身を含む): 286557120

約数和(自身を除く): 84575165

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 198997, 994985, 1392979, 5770913, 6964895, 28854565, 40396391, 201981955]

約数ペア:

[(1, 201981955), (5, 40396391), (7, 28854565), (29, 6964895), (35, 5770913), (145, 1392979), (203, 994985), (1015, 198997)]