19847709

素因数分解:

$3^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{1013}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 32902272

約数和(自身を除く): 13054563

約数列:

[1, 3, 7, 9, 21, 63, 311, 933, 1013, 2177, 2799, 3039, 6531, 7091, 9117, 19593, 21273, 63819, 315043, 945129, 2205301, 2835387, 6615903, 19847709]

約数ペア:

[(1, 19847709), (3, 6615903), (7, 2835387), (9, 2205301), (21, 945129), (63, 315043), (311, 63819), (933, 21273), (1013, 19593), (2177, 9117), (2799, 7091), (3039, 6531)]