28309480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 66211200

約数和(自身を除く): 37901720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 109, 151, 172, 215, 218, 302, 344, 430, 436, 545, 604, 755, 860, 872, 1090, 1208, 1510, 1720, 2180, 3020, 4360, 4687, 6040, 6493, 9374, 12986, 16459, 18748, 23435, 25972, 32465, 32918, 37496, 46870, 51944, 64930, 65836, 82295, 93740, 129860, 131672, 164590, 187480, 259720, 329180, 658360, 707737, 1415474, 2830948, 3538685, 5661896, 7077370, 14154740, 28309480]

約数ペア:

[(1, 28309480), (2, 14154740), (4, 7077370), (5, 5661896), (8, 3538685), (10, 2830948), (20, 1415474), (40, 707737), (43, 658360), (86, 329180), (109, 259720), (151, 187480), (172, 164590), (215, 131672), (218, 129860), (302, 93740), (344, 82295), (430, 65836), (436, 64930), (545, 51944), (604, 46870), (755, 37496), (860, 32918), (872, 32465), (1090, 25972), (1208, 23435), (1510, 18748), (1720, 16459), (2180, 12986), (3020, 9374), (4360, 6493), (4687, 6040)]