28881117

素因数分解:

$3^4\times {\mathrm{149}}^1\times {\mathrm{2393}}^1$

素因数の和:2554

約数の個数: 20

約数和(自身を含む): 43451100

約数和(自身を除く): 14569983

約数列:

[1, 3, 9, 27, 81, 149, 447, 1341, 2393, 4023, 7179, 12069, 21537, 64611, 193833, 356557, 1069671, 3209013, 9627039, 28881117]

約数ペア:

[(1, 28881117), (3, 9627039), (9, 3209013), (27, 1069671), (81, 356557), (149, 193833), (447, 64611), (1341, 21537), (2393, 12069), (4023, 7179)]