21713272

素因数分解:

$2^3\times 7^3\times {\mathrm{41}}^1\times {\mathrm{193}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 48888000

約数和(自身を除く): 27174728

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 49, 56, 82, 98, 164, 193, 196, 287, 328, 343, 386, 392, 574, 686, 772, 1148, 1351, 1372, 1544, 2009, 2296, 2702, 2744, 4018, 5404, 7913, 8036, 9457, 10808, 14063, 15826, 16072, 18914, 28126, 31652, 37828, 55391, 56252, 63304, 66199, 75656, 110782, 112504, 132398, 221564, 264796, 387737, 443128, 529592, 775474, 1550948, 2714159, 3101896, 5428318, 10856636, 21713272]

約数ペア:

[(1, 21713272), (2, 10856636), (4, 5428318), (7, 3101896), (8, 2714159), (14, 1550948), (28, 775474), (41, 529592), (49, 443128), (56, 387737), (82, 264796), (98, 221564), (164, 132398), (193, 112504), (196, 110782), (287, 75656), (328, 66199), (343, 63304), (386, 56252), (392, 55391), (574, 37828), (686, 31652), (772, 28126), (1148, 18914), (1351, 16072), (1372, 15826), (1544, 14063), (2009, 10808), (2296, 9457), (2702, 8036), (2744, 7913), (4018, 5404)]