199901855

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{42397}}^1$

素因数の和:42466

約数の個数: 16

約数和(自身を含む): 256423104

約数和(自身を除く): 56521249

約数列:

[1, 5, 23, 41, 115, 205, 943, 4715, 42397, 211985, 975131, 1738277, 4875655, 8691385, 39980371, 199901855]

約数ペア:

[(1, 199901855), (5, 39980371), (23, 8691385), (41, 4875655), (115, 1738277), (205, 975131), (943, 211985), (4715, 42397)]