247647561

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{2423}}^1$

素因数の和:2621

約数の個数: 32

約数和(自身を含む): 392183808

約数和(自身を除く): 144536247

約数列:

[1, 3, 7, 21, 31, 93, 157, 217, 471, 651, 1099, 2423, 3297, 4867, 7269, 14601, 16961, 34069, 50883, 75113, 102207, 225339, 380411, 525791, 1141233, 1577373, 2662877, 7988631, 11792741, 35378223, 82549187, 247647561]

約数ペア:

[(1, 247647561), (3, 82549187), (7, 35378223), (21, 11792741), (31, 7988631), (93, 2662877), (157, 1577373), (217, 1141233), (471, 525791), (651, 380411), (1099, 225339), (2423, 102207), (3297, 75113), (4867, 50883), (7269, 34069), (14601, 16961)]