20972457

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{607}}^1$

素因数の和:973

約数の個数: 24

約数和(自身を含む): 33196800

約数和(自身を除く): 12224343

約数列:

[1, 3, 9, 11, 33, 99, 349, 607, 1047, 1821, 3141, 3839, 5463, 6677, 11517, 20031, 34551, 60093, 211843, 635529, 1906587, 2330273, 6990819, 20972457]

約数ペア:

[(1, 20972457), (3, 6990819), (9, 2330273), (11, 1906587), (33, 635529), (99, 211843), (349, 60093), (607, 34551), (1047, 20031), (1821, 11517), (3141, 6677), (3839, 5463)]