20891145

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{126613}}^1$

素因数の和:126632

約数の個数: 16

約数和(自身を含む): 36464832

約数和(自身を除く): 15573687

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 126613, 379839, 633065, 1392743, 1899195, 4178229, 6963715, 20891145]

約数ペア:

[(1, 20891145), (3, 6963715), (5, 4178229), (11, 1899195), (15, 1392743), (33, 633065), (55, 379839), (165, 126613)]