21249969

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11593}}^1$

素因数の和:11656

約数の個数: 16

約数和(自身を含む): 31164672

約数和(自身を除く): 9914703

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11593, 34779, 150709, 452127, 544871, 1634613, 7083323, 21249969]

約数ペア:

[(1, 21249969), (3, 7083323), (13, 1634613), (39, 544871), (47, 452127), (141, 150709), (611, 34779), (1833, 11593)]