21641895

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43721}}^1$

素因数の和:43743

約数の個数: 24

約数和(自身を含む): 40923792

約数和(自身を除く): 19281897

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 43721, 131163, 218605, 393489, 480931, 655815, 1442793, 1967445, 2404655, 4328379, 7213965, 21641895]

約数ペア:

[(1, 21641895), (3, 7213965), (5, 4328379), (9, 2404655), (11, 1967445), (15, 1442793), (33, 655815), (45, 480931), (55, 393489), (99, 218605), (165, 131163), (495, 43721)]