20572281

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:230

約数の個数: 36

約数和(自身を含む): 32350500

約数和(自身を除く): 11778219

約数列:

[1, 3, 9, 23, 29, 69, 87, 149, 207, 261, 447, 529, 667, 1341, 1587, 2001, 3427, 4321, 4761, 6003, 10281, 12963, 15341, 30843, 38889, 46023, 78821, 99383, 138069, 236463, 298149, 709389, 894447, 2285809, 6857427, 20572281]

約数ペア:

[(1, 20572281), (3, 6857427), (9, 2285809), (23, 894447), (29, 709389), (69, 298149), (87, 236463), (149, 138069), (207, 99383), (261, 78821), (447, 46023), (529, 38889), (667, 30843), (1341, 15341), (1587, 12963), (2001, 10281), (3427, 6003), (4321, 4761)]