40000990

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{20101}}^1$

素因数の和:20307

約数の個数: 16

約数和(自身を含む): 72367200

約数和(自身を除く): 32366210

約数列:

[1, 2, 5, 10, 199, 398, 995, 1990, 20101, 40202, 100505, 201010, 4000099, 8000198, 20000495, 40000990]

約数ペア:

[(1, 40000990), (2, 20000495), (5, 8000198), (10, 4000099), (199, 201010), (398, 100505), (995, 40202), (1990, 20101)]