81579555

素因数分解:

$3^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1283}}^1$

素因数の和:1457

約数の個数: 40

約数和(自身を含む): 147285072

約数和(自身を除く): 65705517

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 157, 405, 471, 785, 1283, 1413, 2355, 3849, 4239, 6415, 7065, 11547, 12717, 19245, 21195, 34641, 57735, 63585, 103923, 173205, 201431, 519615, 604293, 1007155, 1812879, 3021465, 5438637, 9064395, 16315911, 27193185, 81579555]

約数ペア:

[(1, 81579555), (3, 27193185), (5, 16315911), (9, 9064395), (15, 5438637), (27, 3021465), (45, 1812879), (81, 1007155), (135, 604293), (157, 519615), (405, 201431), (471, 173205), (785, 103923), (1283, 63585), (1413, 57735), (2355, 34641), (3849, 21195), (4239, 19245), (6415, 12717), (7065, 11547)]