1987489615

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{19777}}^1$

素因数の和:20082

約数の個数: 16

約数和(自身を含む): 2420827200

約数和(自身を除く): 433337585

約数列:

[1, 5, 101, 199, 505, 995, 19777, 20099, 98885, 100495, 1997477, 3935623, 9987385, 19678115, 397497923, 1987489615]

約数ペア:

[(1, 1987489615), (5, 397497923), (101, 19678115), (199, 9987385), (505, 3935623), (995, 1997477), (19777, 100495), (20099, 98885)]