21996579

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 33928704

約数和(自身を除く): 11932125

約数列:

[1, 3, 11, 23, 33, 69, 73, 219, 253, 397, 759, 803, 1191, 1679, 2409, 4367, 5037, 9131, 13101, 18469, 27393, 28981, 55407, 86943, 100441, 301323, 318791, 666563, 956373, 1999689, 7332193, 21996579]

約数ペア:

[(1, 21996579), (3, 7332193), (11, 1999689), (23, 956373), (33, 666563), (69, 318791), (73, 301323), (219, 100441), (253, 86943), (397, 55407), (759, 28981), (803, 27393), (1191, 18469), (1679, 13101), (2409, 9131), (4367, 5037)]