20305245

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31481}}^1$

素因数の和:31532

約数の個数: 16

約数和(自身を含む): 33244992

約数和(自身を除く): 12939747

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31481, 94443, 157405, 472215, 1353683, 4061049, 6768415, 20305245]

約数ペア:

[(1, 20305245), (3, 6768415), (5, 4061049), (15, 1353683), (43, 472215), (129, 157405), (215, 94443), (645, 31481)]