21312039

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 33546240

約数和(自身を除く): 12234201

約数列:

[1, 3, 7, 21, 59, 103, 167, 177, 309, 413, 501, 721, 1169, 1239, 2163, 3507, 6077, 9853, 17201, 18231, 29559, 42539, 51603, 68971, 120407, 127617, 206913, 361221, 1014859, 3044577, 7104013, 21312039]

約数ペア:

[(1, 21312039), (3, 7104013), (7, 3044577), (21, 1014859), (59, 361221), (103, 206913), (167, 127617), (177, 120407), (309, 68971), (413, 51603), (501, 42539), (721, 29559), (1169, 18231), (1239, 17201), (2163, 9853), (3507, 6077)]