21729616

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71479}}^1$

素因数の和:71506

約数の個数: 20

約数和(自身を含む): 44317600

約数和(自身を除く): 22587984

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71479, 142958, 285916, 571832, 1143664, 1358101, 2716202, 5432404, 10864808, 21729616]

約数ペア:

[(1, 21729616), (2, 10864808), (4, 5432404), (8, 2716202), (16, 1358101), (19, 1143664), (38, 571832), (76, 285916), (152, 142958), (304, 71479)]