21133026820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1\times {\mathrm{1493}}^1$

素因数の和:1805

約数の個数: 96

約数和(自身を含む): 46162448640

約数和(自身を除く): 25029421820

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 109, 151, 172, 215, 218, 302, 430, 436, 545, 604, 755, 860, 1090, 1493, 1510, 2180, 2986, 3020, 4687, 5972, 6493, 7465, 9374, 12986, 14930, 16459, 18748, 23435, 25972, 29860, 32465, 32918, 46870, 64199, 64930, 65836, 82295, 93740, 128398, 129860, 162737, 164590, 225443, 256796, 320995, 325474, 329180, 450886, 641990, 650948, 707737, 813685, 901772, 1127215, 1283980, 1415474, 1627370, 2254430, 2830948, 3254740, 3538685, 4508860, 6997691, 7077370, 9694049, 13995382, 14154740, 19388098, 24573287, 27990764, 34988455, 38776196, 48470245, 49146574, 69976910, 96940490, 98293148, 122866435, 139953820, 193880980, 245732870, 491465740, 1056651341, 2113302682, 4226605364, 5283256705, 10566513410, 21133026820]

約数ペア:

[(1, 21133026820), (2, 10566513410), (4, 5283256705), (5, 4226605364), (10, 2113302682), (20, 1056651341), (43, 491465740), (86, 245732870), (109, 193880980), (151, 139953820), (172, 122866435), (215, 98293148), (218, 96940490), (302, 69976910), (430, 49146574), (436, 48470245), (545, 38776196), (604, 34988455), (755, 27990764), (860, 24573287), (1090, 19388098), (1493, 14154740), (1510, 13995382), (2180, 9694049), (2986, 7077370), (3020, 6997691), (4687, 4508860), (5972, 3538685), (6493, 3254740), (7465, 2830948), (9374, 2254430), (12986, 1627370), (14930, 1415474), (16459, 1283980), (18748, 1127215), (23435, 901772), (25972, 813685), (29860, 707737), (32465, 650948), (32918, 641990), (46870, 450886), (64199, 329180), (64930, 325474), (65836, 320995), (82295, 256796), (93740, 225443), (128398, 164590), (129860, 162737)]