81786405

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1\times {\mathrm{919}}^1$

素因数の和:1293

約数の個数: 32

約数和(自身を含む): 139104000

約数和(自身を除く): 57317595

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 349, 919, 1047, 1745, 2757, 4595, 5235, 5933, 13785, 15623, 17799, 29665, 46869, 78115, 88995, 234345, 320731, 962193, 1603655, 4810965, 5452427, 16357281, 27262135, 81786405]

約数ペア:

[(1, 81786405), (3, 27262135), (5, 16357281), (15, 5452427), (17, 4810965), (51, 1603655), (85, 962193), (255, 320731), (349, 234345), (919, 88995), (1047, 78115), (1745, 46869), (2757, 29665), (4595, 17799), (5235, 15623), (5933, 13785)]