20376944

素因数分解:

$2^4\times 7^3\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 80

約数和(自身を含む): 47616000

約数和(自身を除く): 27239056

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 47, 49, 56, 79, 94, 98, 112, 158, 188, 196, 316, 329, 343, 376, 392, 553, 632, 658, 686, 752, 784, 1106, 1264, 1316, 1372, 2212, 2303, 2632, 2744, 3713, 3871, 4424, 4606, 5264, 5488, 7426, 7742, 8848, 9212, 14852, 15484, 16121, 18424, 25991, 27097, 29704, 30968, 32242, 36848, 51982, 54194, 59408, 61936, 64484, 103964, 108388, 128968, 181937, 207928, 216776, 257936, 363874, 415856, 433552, 727748, 1273559, 1455496, 2547118, 2910992, 5094236, 10188472, 20376944]

約数ペア:

[(1, 20376944), (2, 10188472), (4, 5094236), (7, 2910992), (8, 2547118), (14, 1455496), (16, 1273559), (28, 727748), (47, 433552), (49, 415856), (56, 363874), (79, 257936), (94, 216776), (98, 207928), (112, 181937), (158, 128968), (188, 108388), (196, 103964), (316, 64484), (329, 61936), (343, 59408), (376, 54194), (392, 51982), (553, 36848), (632, 32242), (658, 30968), (686, 29704), (752, 27097), (784, 25991), (1106, 18424), (1264, 16121), (1316, 15484), (1372, 14852), (2212, 9212), (2303, 8848), (2632, 7742), (2744, 7426), (3713, 5488), (3871, 5264), (4424, 4606)]