21216442

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2087}}^1$

素因数の和:2142

約数の個数: 32

約数和(自身を含む): 37884672

約数和(自身を除く): 16668230

約数列:

[1, 2, 13, 17, 23, 26, 34, 46, 221, 299, 391, 442, 598, 782, 2087, 4174, 5083, 10166, 27131, 35479, 48001, 54262, 70958, 96002, 461227, 624013, 816017, 922454, 1248026, 1632034, 10608221, 21216442]

約数ペア:

[(1, 21216442), (2, 10608221), (13, 1632034), (17, 1248026), (23, 922454), (26, 816017), (34, 624013), (46, 461227), (221, 96002), (299, 70958), (391, 54262), (442, 48001), (598, 35479), (782, 27131), (2087, 10166), (4174, 5083)]