21031888581

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{19313029}}^1$

素因数の和:19313057

約数の個数: 18

約数和(自身を含む): 33392228870

約数和(自身を除く): 12360340289

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 1089, 19313029, 57939087, 173817261, 212443319, 637329957, 1911989871, 2336876509, 7010629527, 21031888581]

約数ペア:

[(1, 21031888581), (3, 7010629527), (9, 2336876509), (11, 1911989871), (33, 637329957), (99, 212443319), (121, 173817261), (363, 57939087), (1089, 19313029)]