20782328

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{191}}^1$

素因数の和:300

約数の個数: 64

約数和(自身を含む): 47001600

約数和(自身を除く): 26219272

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 67, 116, 134, 191, 203, 232, 268, 382, 406, 469, 536, 764, 812, 938, 1337, 1528, 1624, 1876, 1943, 2674, 3752, 3886, 5348, 5539, 7772, 10696, 11078, 12797, 13601, 15544, 22156, 25594, 27202, 38773, 44312, 51188, 54404, 77546, 89579, 102376, 108808, 155092, 179158, 310184, 358316, 371113, 716632, 742226, 1484452, 2597791, 2968904, 5195582, 10391164, 20782328]

約数ペア:

[(1, 20782328), (2, 10391164), (4, 5195582), (7, 2968904), (8, 2597791), (14, 1484452), (28, 742226), (29, 716632), (56, 371113), (58, 358316), (67, 310184), (116, 179158), (134, 155092), (191, 108808), (203, 102376), (232, 89579), (268, 77546), (382, 54404), (406, 51188), (469, 44312), (536, 38773), (764, 27202), (812, 25594), (938, 22156), (1337, 15544), (1528, 13601), (1624, 12797), (1876, 11078), (1943, 10696), (2674, 7772), (3752, 5539), (3886, 5348)]