21383521

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:352

約数の個数: 16

約数和(自身を含む): 23016448

約数和(自身を除く): 1632927

約数列:

[1, 31, 37, 103, 181, 1147, 3193, 3811, 5611, 6697, 18643, 118141, 207607, 577933, 689791, 21383521]

約数ペア:

[(1, 21383521), (31, 689791), (37, 577933), (103, 207607), (181, 118141), (1147, 18643), (3193, 6697), (3811, 5611)]