21000724497

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13183129}}^1$

素因数の和:13183197

約数の個数: 16

約数和(自身を含む): 31639512000

約数和(自身を除く): 10638787503

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13183129, 39549387, 118648161, 355944483, 777804611, 2333413833, 7000241499, 21000724497]

約数ペア:

[(1, 21000724497), (3, 7000241499), (9, 2333413833), (27, 777804611), (59, 355944483), (177, 118648161), (531, 39549387), (1593, 13183129)]