20722947

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{433}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 32997888

約数和(自身を除く): 12274941

約数列:

[1, 3, 7, 21, 43, 53, 129, 159, 301, 371, 433, 903, 1113, 1299, 2279, 3031, 6837, 9093, 15953, 18619, 22949, 47859, 55857, 68847, 130333, 160643, 390999, 481929, 986807, 2960421, 6907649, 20722947]

約数ペア:

[(1, 20722947), (3, 6907649), (7, 2960421), (21, 986807), (43, 481929), (53, 390999), (129, 160643), (159, 130333), (301, 68847), (371, 55857), (433, 47859), (903, 22949), (1113, 18619), (1299, 15953), (2279, 9093), (3031, 6837)]