21165573

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{479}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 12380667

約数列:

[1, 3, 11, 13, 33, 39, 103, 143, 309, 429, 479, 1133, 1339, 1437, 3399, 4017, 5269, 6227, 14729, 15807, 18681, 44187, 49337, 68497, 148011, 205491, 542707, 641381, 1628121, 1924143, 7055191, 21165573]

約数ペア:

[(1, 21165573), (3, 7055191), (11, 1924143), (13, 1628121), (33, 641381), (39, 542707), (103, 205491), (143, 148011), (309, 68497), (429, 49337), (479, 44187), (1133, 18681), (1339, 15807), (1437, 14729), (3399, 6227), (4017, 5269)]