199972040

素因数分解:

$2^3\times 5^1\times {\mathrm{4999301}}^1$

素因数の和:4999312

約数の個数: 16

約数和(自身を含む): 449937180

約数和(自身を除く): 249965140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4999301, 9998602, 19997204, 24996505, 39994408, 49993010, 99986020, 199972040]

約数ペア:

[(1, 199972040), (2, 99986020), (4, 49993010), (5, 39994408), (8, 24996505), (10, 19997204), (20, 9998602), (40, 4999301)]