21161151

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 35212320

約数和(自身を除く): 14051169

約数列:

[1, 3, 9, 11, 33, 37, 53, 99, 109, 111, 159, 327, 333, 407, 477, 583, 981, 1199, 1221, 1749, 1961, 3597, 3663, 4033, 5247, 5777, 5883, 10791, 12099, 17331, 17649, 21571, 36297, 44363, 51993, 63547, 64713, 133089, 190641, 194139, 213749, 399267, 571923, 641247, 1923741, 2351239, 7053717, 21161151]

約数ペア:

[(1, 21161151), (3, 7053717), (9, 2351239), (11, 1923741), (33, 641247), (37, 571923), (53, 399267), (99, 213749), (109, 194139), (111, 190641), (159, 133089), (327, 64713), (333, 63547), (407, 51993), (477, 44363), (583, 36297), (981, 21571), (1199, 17649), (1221, 17331), (1749, 12099), (1961, 10791), (3597, 5883), (3663, 5777), (4033, 5247)]