20990673

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{1423}}^1$

素因数の和:1589

約数の個数: 24

約数和(自身を含む): 33321600

約数和(自身を除く): 12330927

約数列:

[1, 3, 9, 11, 33, 99, 149, 447, 1341, 1423, 1639, 4269, 4917, 12807, 14751, 15653, 46959, 140877, 212027, 636081, 1908243, 2332297, 6996891, 20990673]

約数ペア:

[(1, 20990673), (3, 6996891), (9, 2332297), (11, 1908243), (33, 636081), (99, 212027), (149, 140877), (447, 46959), (1341, 15653), (1423, 14751), (1639, 12807), (4269, 4917)]