199955985

素因数分解:

$3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:793

約数の個数: 32

約数和(自身を含む): 324352512

約数和(自身を除く): 124396527

約数列:

[1, 3, 5, 15, 157, 197, 431, 471, 591, 785, 985, 1293, 2155, 2355, 2955, 6465, 30929, 67667, 84907, 92787, 154645, 203001, 254721, 338335, 424535, 463935, 1015005, 1273605, 13330399, 39991197, 66651995, 199955985]

約数ペア:

[(1, 199955985), (3, 66651995), (5, 39991197), (15, 13330399), (157, 1273605), (197, 1015005), (431, 463935), (471, 424535), (591, 338335), (785, 254721), (985, 203001), (1293, 154645), (2155, 92787), (2355, 84907), (2955, 67667), (6465, 30929)]