21638673

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{9283}}^1$

素因数の和:9333

約数の個数: 24

約数和(自身を含む): 36690368

約数和(自身を除く): 15051695

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 9283, 27849, 64981, 83547, 194943, 343471, 584829, 1030413, 2404297, 3091239, 7212891, 21638673]

約数ペア:

[(1, 21638673), (3, 7212891), (7, 3091239), (9, 2404297), (21, 1030413), (37, 584829), (63, 343471), (111, 194943), (259, 83547), (333, 64981), (777, 27849), (2331, 9283)]