28301805

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:240

約数の個数: 80

約数和(自身を含む): 59241600

約数和(自身を除く): 30939795

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 67, 81, 105, 135, 149, 189, 201, 315, 335, 405, 447, 469, 567, 603, 745, 945, 1005, 1043, 1341, 1407, 1809, 2235, 2345, 2835, 3015, 3129, 4023, 4221, 5215, 5427, 6705, 7035, 9045, 9387, 9983, 12069, 12663, 15645, 20115, 21105, 27135, 28161, 29949, 37989, 46935, 49915, 60345, 63315, 69881, 84483, 89847, 140805, 149745, 189945, 209643, 269541, 349405, 422415, 449235, 628929, 808623, 1048215, 1347705, 1886787, 3144645, 4043115, 5660361, 9433935, 28301805]

約数ペア:

[(1, 28301805), (3, 9433935), (5, 5660361), (7, 4043115), (9, 3144645), (15, 1886787), (21, 1347705), (27, 1048215), (35, 808623), (45, 628929), (63, 449235), (67, 422415), (81, 349405), (105, 269541), (135, 209643), (149, 189945), (189, 149745), (201, 140805), (315, 89847), (335, 84483), (405, 69881), (447, 63315), (469, 60345), (567, 49915), (603, 46935), (745, 37989), (945, 29949), (1005, 28161), (1043, 27135), (1341, 21105), (1407, 20115), (1809, 15645), (2235, 12663), (2345, 12069), (2835, 9983), (3015, 9387), (3129, 9045), (4023, 7035), (4221, 6705), (5215, 5427)]