21311353

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 6060167

約数列:

[1, 7, 17, 31, 53, 109, 119, 217, 371, 527, 763, 901, 1643, 1853, 3379, 3689, 5777, 6307, 11501, 12971, 23653, 27931, 40439, 57443, 98209, 179087, 195517, 402101, 687463, 1253609, 3044479, 21311353]

約数ペア:

[(1, 21311353), (7, 3044479), (17, 1253609), (31, 687463), (53, 402101), (109, 195517), (119, 179087), (217, 98209), (371, 57443), (527, 40439), (763, 27931), (901, 23653), (1643, 12971), (1853, 11501), (3379, 6307), (3689, 5777)]