81257985

素因数分解:

$3^8\times 5^1\times {\mathrm{2477}}^1$

素因数の和:2506

約数の個数: 36

約数和(自身を含む): 146315988

約数和(自身を除く): 65058003

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 2187, 2477, 3645, 6561, 7431, 10935, 12385, 22293, 32805, 37155, 66879, 111465, 200637, 334395, 601911, 1003185, 1805733, 3009555, 5417199, 9028665, 16251597, 27085995, 81257985]

約数ペア:

[(1, 81257985), (3, 27085995), (5, 16251597), (9, 9028665), (15, 5417199), (27, 3009555), (45, 1805733), (81, 1003185), (135, 601911), (243, 334395), (405, 200637), (729, 111465), (1215, 66879), (2187, 37155), (2477, 32805), (3645, 22293), (6561, 12385), (7431, 10935)]