20921726

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^2\times {\mathrm{127}}^1$

素因数の和:225

約数の個数: 36

約数和(自身を含む): 37713024

約数和(自身を除く): 16791298

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 127, 254, 287, 574, 889, 1681, 1778, 2009, 3362, 4018, 5207, 6223, 10414, 11767, 12446, 23534, 36449, 72898, 82369, 164738, 213487, 255143, 426974, 510286, 1494409, 2988818, 10460863, 20921726]

約数ペア:

[(1, 20921726), (2, 10460863), (7, 2988818), (14, 1494409), (41, 510286), (49, 426974), (82, 255143), (98, 213487), (127, 164738), (254, 82369), (287, 72898), (574, 36449), (889, 23534), (1681, 12446), (1778, 11767), (2009, 10414), (3362, 6223), (4018, 5207)]