21093615

素因数分解:

$3^8\times 5^1\times {\mathrm{643}}^1$

素因数の和:672

約数の個数: 36

約数和(自身を含む): 38025624

約数和(自身を除く): 16932009

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 643, 729, 1215, 1929, 2187, 3215, 3645, 5787, 6561, 9645, 10935, 17361, 28935, 32805, 52083, 86805, 156249, 260415, 468747, 781245, 1406241, 2343735, 4218723, 7031205, 21093615]

約数ペア:

[(1, 21093615), (3, 7031205), (5, 4218723), (9, 2343735), (15, 1406241), (27, 781245), (45, 468747), (81, 260415), (135, 156249), (243, 86805), (405, 52083), (643, 32805), (729, 28935), (1215, 17361), (1929, 10935), (2187, 9645), (3215, 6561), (3645, 5787)]