21054778

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{5209}}^1$

素因数の和:5301

約数の個数: 16

約数和(自身を含む): 33010560

約数和(自身を除く): 11955782

約数列:

[1, 2, 43, 47, 86, 94, 2021, 4042, 5209, 10418, 223987, 244823, 447974, 489646, 10527389, 21054778]

約数ペア:

[(1, 21054778), (2, 10527389), (43, 489646), (47, 447974), (86, 244823), (94, 223987), (2021, 10418), (4042, 5209)]