21072539

素因数分解:

${\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:338

約数の個数: 16

約数和(自身を含む): 22848000

約数和(自身を除く): 1775461

約数列:

[1, 19, 79, 101, 139, 1501, 1919, 2641, 7979, 10981, 14039, 151601, 208639, 266741, 1109081, 21072539]

約数ペア:

[(1, 21072539), (19, 1109081), (79, 266741), (101, 208639), (139, 151601), (1501, 14039), (1919, 10981), (2641, 7979)]