21716055

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28387}}^1$

素因数の和:28415

約数の個数: 24

約数和(自身を含む): 39856752

約数和(自身を除く): 18140697

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28387, 85161, 141935, 255483, 425805, 482579, 1277415, 1447737, 2412895, 4343211, 7238685, 21716055]

約数ペア:

[(1, 21716055), (3, 7238685), (5, 4343211), (9, 2412895), (15, 1447737), (17, 1277415), (45, 482579), (51, 425805), (85, 255483), (153, 141935), (255, 85161), (765, 28387)]