21494565

素因数分解:

$3^6\times 5^1\times {\mathrm{5897}}^1$

素因数の和:5920

約数の個数: 28

約数和(自身を含む): 38679084

約数和(自身を除く): 17184519

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5897, 17691, 29485, 53073, 88455, 159219, 265365, 477657, 796095, 1432971, 2388285, 4298913, 7164855, 21494565]

約数ペア:

[(1, 21494565), (3, 7164855), (5, 4298913), (9, 2388285), (15, 1432971), (27, 796095), (45, 477657), (81, 265365), (135, 159219), (243, 88455), (405, 53073), (729, 29485), (1215, 17691), (3645, 5897)]