85987100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{19997}}^1$

素因数の和:20054

約数の個数: 36

約数和(自身を含む): 190940904

約数和(自身を除く): 104953804

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 19997, 39994, 79988, 99985, 199970, 399940, 499925, 859871, 999850, 1719742, 1999700, 3439484, 4299355, 8598710, 17197420, 21496775, 42993550, 85987100]

約数ペア:

[(1, 85987100), (2, 42993550), (4, 21496775), (5, 17197420), (10, 8598710), (20, 4299355), (25, 3439484), (43, 1999700), (50, 1719742), (86, 999850), (100, 859871), (172, 499925), (215, 399940), (430, 199970), (860, 99985), (1075, 79988), (2150, 39994), (4300, 19997)]