21908909

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1367}}^1$

素因数の和:1456

約数の個数: 16

約数和(自身を含む): 25214976

約数和(自身を除く): 3306067

約数列:

[1, 11, 31, 47, 341, 517, 1367, 1457, 15037, 16027, 42377, 64249, 466147, 706739, 1991719, 21908909]

約数ペア:

[(1, 21908909), (11, 1991719), (31, 706739), (47, 466147), (341, 64249), (517, 42377), (1367, 16027), (1457, 15037)]