28081791

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1693}}^1$

素因数の和:1815

約数の個数: 24

約数和(自身を含む): 43163120

約数和(自身を除く): 15081329

約数列:

[1, 3, 9, 19, 57, 97, 171, 291, 873, 1693, 1843, 5079, 5529, 15237, 16587, 32167, 96501, 164221, 289503, 492663, 1477989, 3120199, 9360597, 28081791]

約数ペア:

[(1, 28081791), (3, 9360597), (9, 3120199), (19, 1477989), (57, 492663), (97, 289503), (171, 164221), (291, 96501), (873, 32167), (1693, 16587), (1843, 15237), (5079, 5529)]