20869965

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27281}}^1$

素因数の和:27309

約数の個数: 24

約数和(自身を含む): 38303928

約数和(自身を除く): 17433963

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27281, 81843, 136405, 245529, 409215, 463777, 1227645, 1391331, 2318885, 4173993, 6956655, 20869965]

約数ペア:

[(1, 20869965), (3, 6956655), (5, 4173993), (9, 2318885), (15, 1391331), (17, 1227645), (45, 463777), (51, 409215), (85, 245529), (153, 136405), (255, 81843), (765, 27281)]