31316680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11027}}^1$

素因数の和:11109

約数の個数: 32

約数和(自身を含む): 71461440

約数和(自身を除く): 40144760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11027, 22054, 44108, 55135, 88216, 110270, 220540, 441080, 782917, 1565834, 3131668, 3914585, 6263336, 7829170, 15658340, 31316680]

約数ペア:

[(1, 31316680), (2, 15658340), (4, 7829170), (5, 6263336), (8, 3914585), (10, 3131668), (20, 1565834), (40, 782917), (71, 441080), (142, 220540), (284, 110270), (355, 88216), (568, 55135), (710, 44108), (1420, 22054), (2840, 11027)]