21911895

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28643}}^1$

素因数の和:28671

約数の個数: 24

約数和(自身を含む): 40216176

約数和(自身を除く): 18304281

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28643, 85929, 143215, 257787, 429645, 486931, 1288935, 1460793, 2434655, 4382379, 7303965, 21911895]

約数ペア:

[(1, 21911895), (3, 7303965), (5, 4382379), (9, 2434655), (15, 1460793), (17, 1288935), (45, 486931), (51, 429645), (85, 257787), (153, 143215), (255, 85929), (765, 28643)]