81311356

素因数分解:

$2^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{14741}}^1$

素因数の和:14949

約数の個数: 24

約数和(自身を含む): 163459296

約数和(自身を除く): 82147940

約数列:

[1, 2, 4, 7, 14, 28, 197, 394, 788, 1379, 2758, 5516, 14741, 29482, 58964, 103187, 206374, 412748, 2903977, 5807954, 11615908, 20327839, 40655678, 81311356]

約数ペア:

[(1, 81311356), (2, 40655678), (4, 20327839), (7, 11615908), (14, 5807954), (28, 2903977), (197, 412748), (394, 206374), (788, 103187), (1379, 58964), (2758, 29482), (5516, 14741)]