21197912

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1973}}^1$

素因数の和:2075

約数の個数: 32

約数和(自身を含む): 42638400

約数和(自身を除く): 21440488

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 136, 158, 316, 632, 1343, 1973, 2686, 3946, 5372, 7892, 10744, 15784, 33541, 67082, 134164, 155867, 268328, 311734, 623468, 1246936, 2649739, 5299478, 10598956, 21197912]

約数ペア:

[(1, 21197912), (2, 10598956), (4, 5299478), (8, 2649739), (17, 1246936), (34, 623468), (68, 311734), (79, 268328), (136, 155867), (158, 134164), (316, 67082), (632, 33541), (1343, 15784), (1973, 10744), (2686, 7892), (3946, 5372)]