28208830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{216991}}^1$

素因数の和:217011

約数の個数: 16

約数和(自身を含む): 54681984

約数和(自身を除く): 26473154

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 216991, 433982, 1084955, 2169910, 2820883, 5641766, 14104415, 28208830]

約数ペア:

[(1, 28208830), (2, 14104415), (5, 5641766), (10, 2820883), (13, 2169910), (26, 1084955), (65, 433982), (130, 216991)]