80715640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:472

約数の個数: 64

約数和(自身を含む): 186701760

約数和(自身を除く): 105986120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 97, 142, 194, 284, 293, 355, 388, 485, 568, 586, 710, 776, 970, 1172, 1420, 1465, 1940, 2344, 2840, 2930, 3880, 5860, 6887, 11720, 13774, 20803, 27548, 28421, 34435, 41606, 55096, 56842, 68870, 83212, 104015, 113684, 137740, 142105, 166424, 208030, 227368, 275480, 284210, 416060, 568420, 832120, 1136840, 2017891, 4035782, 8071564, 10089455, 16143128, 20178910, 40357820, 80715640]

約数ペア:

[(1, 80715640), (2, 40357820), (4, 20178910), (5, 16143128), (8, 10089455), (10, 8071564), (20, 4035782), (40, 2017891), (71, 1136840), (97, 832120), (142, 568420), (194, 416060), (284, 284210), (293, 275480), (355, 227368), (388, 208030), (485, 166424), (568, 142105), (586, 137740), (710, 113684), (776, 104015), (970, 83212), (1172, 68870), (1420, 56842), (1465, 55096), (1940, 41606), (2344, 34435), (2840, 28421), (2930, 27548), (3880, 20803), (5860, 13774), (6887, 11720)]