261497787

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 371312640

約数和(自身を除く): 109814853

約数列:

[1, 3, 23, 69, 101, 157, 239, 303, 471, 717, 2323, 3611, 5497, 6969, 10833, 15857, 16491, 24139, 37523, 47571, 72417, 112569, 364711, 555197, 863029, 1094133, 1665591, 2589087, 3789823, 11369469, 87165929, 261497787]

約数ペア:

[(1, 261497787), (3, 87165929), (23, 11369469), (69, 3789823), (101, 2589087), (157, 1665591), (239, 1094133), (303, 863029), (471, 555197), (717, 364711), (2323, 112569), (3611, 72417), (5497, 47571), (6969, 37523), (10833, 24139), (15857, 16491)]