12749805

素因数分解:

$3^4\times 5^1\times {\mathrm{31481}}^1$

素因数の和:31498

約数の個数: 20

約数和(自身を含む): 22855932

約数和(自身を除く): 10106127

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 31481, 94443, 157405, 283329, 472215, 849987, 1416645, 2549961, 4249935, 12749805]

約数ペア:

[(1, 12749805), (3, 4249935), (5, 2549961), (9, 1416645), (15, 849987), (27, 472215), (45, 283329), (81, 157405), (135, 94443), (405, 31481)]