199902520

素因数分解:

$2^3\times 5^1\times {\mathrm{4997563}}^1$

素因数の和:4997574

約数の個数: 16

約数和(自身を含む): 449780760

約数和(自身を除く): 249878240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4997563, 9995126, 19990252, 24987815, 39980504, 49975630, 99951260, 199902520]

約数ペア:

[(1, 199902520), (2, 99951260), (4, 49975630), (5, 39980504), (8, 24987815), (10, 19990252), (20, 9995126), (40, 4997563)]