28979289

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{5039}}^1$

素因数の和:5122

約数の個数: 20

約数和(自身を含む): 43908480

約数和(自身を除く): 14929191

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5039, 5751, 15117, 45351, 136053, 357769, 408159, 1073307, 3219921, 9659763, 28979289]

約数ペア:

[(1, 28979289), (3, 9659763), (9, 3219921), (27, 1073307), (71, 408159), (81, 357769), (213, 136053), (639, 45351), (1917, 15117), (5039, 5751)]