219896990

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{110501}}^1$

素因数の和:110707

約数の個数: 16

約数和(自身を含む): 397807200

約数和(自身を除く): 177910210

約数列:

[1, 2, 5, 10, 199, 398, 995, 1990, 110501, 221002, 552505, 1105010, 21989699, 43979398, 109948495, 219896990]

約数ペア:

[(1, 219896990), (2, 109948495), (5, 43979398), (10, 21989699), (199, 1105010), (398, 552505), (995, 221002), (1990, 110501)]