20739712

素因数分解:

$2^7\times 7^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 27241088

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 79, 112, 128, 158, 224, 293, 316, 448, 553, 586, 632, 896, 1106, 1172, 1264, 2051, 2212, 2344, 2528, 4102, 4424, 4688, 5056, 8204, 8848, 9376, 10112, 16408, 17696, 18752, 23147, 32816, 35392, 37504, 46294, 65632, 70784, 92588, 131264, 162029, 185176, 262528, 324058, 370352, 648116, 740704, 1296232, 1481408, 2592464, 2962816, 5184928, 10369856, 20739712]

約数ペア:

[(1, 20739712), (2, 10369856), (4, 5184928), (7, 2962816), (8, 2592464), (14, 1481408), (16, 1296232), (28, 740704), (32, 648116), (56, 370352), (64, 324058), (79, 262528), (112, 185176), (128, 162029), (158, 131264), (224, 92588), (293, 70784), (316, 65632), (448, 46294), (553, 37504), (586, 35392), (632, 32816), (896, 23147), (1106, 18752), (1172, 17696), (1264, 16408), (2051, 10112), (2212, 9376), (2344, 8848), (2528, 8204), (4102, 5056), (4424, 4688)]