20449215

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26731}}^1$

素因数の和:26759

約数の個数: 24

約数和(自身を含む): 37531728

約数和(自身を除く): 17082513

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 26731, 80193, 133655, 240579, 400965, 454427, 1202895, 1363281, 2272135, 4089843, 6816405, 20449215]

約数ペア:

[(1, 20449215), (3, 6816405), (5, 4089843), (9, 2272135), (15, 1363281), (17, 1202895), (45, 454427), (51, 400965), (85, 240579), (153, 133655), (255, 80193), (765, 26731)]