21472437

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:182

約数の個数: 36

約数和(自身を含む): 34528320

約数和(自身を除く): 13055883

約数列:

[1, 3, 7, 21, 43, 49, 79, 129, 147, 237, 301, 553, 903, 1659, 1849, 2107, 3397, 3871, 5547, 6321, 10191, 11613, 12943, 23779, 38829, 71337, 90601, 146071, 166453, 271803, 438213, 499359, 1022497, 3067491, 7157479, 21472437]

約数ペア:

[(1, 21472437), (3, 7157479), (7, 3067491), (21, 1022497), (43, 499359), (49, 438213), (79, 271803), (129, 166453), (147, 146071), (237, 90601), (301, 71337), (553, 38829), (903, 23779), (1659, 12943), (1849, 11613), (2107, 10191), (3397, 6321), (3871, 5547)]