20905781

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{2411}}^1$

素因数の和:2476

約数の個数: 16

約数和(自身を含む): 24312960

約数和(自身を除く): 3407179

約数列:

[1, 13, 23, 29, 299, 377, 667, 2411, 8671, 31343, 55453, 69919, 720889, 908947, 1608137, 20905781]

約数ペア:

[(1, 20905781), (13, 1608137), (23, 908947), (29, 720889), (299, 69919), (377, 55453), (667, 31343), (2411, 8671)]