20490987

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2971}}^1$

素因数の和:3015

約数の個数: 24

約数和(自身を含む): 31622080

約数和(自身を除く): 11131093

約数列:

[1, 3, 11, 19, 33, 57, 121, 209, 363, 627, 2299, 2971, 6897, 8913, 32681, 56449, 98043, 169347, 359491, 620939, 1078473, 1862817, 6830329, 20490987]

約数ペア:

[(1, 20490987), (3, 6830329), (11, 1862817), (19, 1078473), (33, 620939), (57, 359491), (121, 169347), (209, 98043), (363, 56449), (627, 32681), (2299, 8913), (2971, 6897)]