81571412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{4139}}^1$

素因数の和:4535

約数の個数: 24

約数和(自身を含む): 154173600

約数和(自身を除く): 72602188

約数列:

[1, 2, 4, 13, 26, 52, 379, 758, 1516, 4139, 4927, 8278, 9854, 16556, 19708, 53807, 107614, 215228, 1568681, 3137362, 6274724, 20392853, 40785706, 81571412]

約数ペア:

[(1, 81571412), (2, 40785706), (4, 20392853), (13, 6274724), (26, 3137362), (52, 1568681), (379, 215228), (758, 107614), (1516, 53807), (4139, 19708), (4927, 16556), (8278, 9854)]