209211105

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{601}}^1\times {\mathrm{1009}}^1$

素因数の和:1641

約数の個数: 32

約数和(自身を含む): 350219520

約数和(自身を除く): 141008415

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 601, 1009, 1803, 3005, 3027, 5045, 9015, 13823, 15135, 23207, 41469, 69115, 69621, 116035, 207345, 348105, 606409, 1819227, 3032045, 9096135, 13947407, 41842221, 69737035, 209211105]

約数ペア:

[(1, 209211105), (3, 69737035), (5, 41842221), (15, 13947407), (23, 9096135), (69, 3032045), (115, 1819227), (345, 606409), (601, 348105), (1009, 207345), (1803, 116035), (3005, 69621), (3027, 69115), (5045, 41469), (9015, 23207), (13823, 15135)]