18978830

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{145991}}^1$

素因数の和:146011

約数の個数: 16

約数和(自身を含む): 36789984

約数和(自身を除く): 17811154

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 145991, 291982, 729955, 1459910, 1897883, 3795766, 9489415, 18978830]

約数ペア:

[(1, 18978830), (2, 9489415), (5, 3795766), (10, 1897883), (13, 1459910), (26, 729955), (65, 291982), (130, 145991)]