21665056

素因数分解:

$2^5\times 7^2\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:402

約数の個数: 72

約数和(自身を含む): 50977836

約数和(自身を除く): 29312780

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 49, 56, 82, 98, 112, 164, 196, 224, 287, 328, 337, 392, 574, 656, 674, 784, 1148, 1312, 1348, 1568, 2009, 2296, 2359, 2696, 4018, 4592, 4718, 5392, 8036, 9184, 9436, 10784, 13817, 16072, 16513, 18872, 27634, 32144, 33026, 37744, 55268, 64288, 66052, 75488, 96719, 110536, 132104, 193438, 221072, 264208, 386876, 442144, 528416, 677033, 773752, 1354066, 1547504, 2708132, 3095008, 5416264, 10832528, 21665056]

約数ペア:

[(1, 21665056), (2, 10832528), (4, 5416264), (7, 3095008), (8, 2708132), (14, 1547504), (16, 1354066), (28, 773752), (32, 677033), (41, 528416), (49, 442144), (56, 386876), (82, 264208), (98, 221072), (112, 193438), (164, 132104), (196, 110536), (224, 96719), (287, 75488), (328, 66052), (337, 64288), (392, 55268), (574, 37744), (656, 33026), (674, 32144), (784, 27634), (1148, 18872), (1312, 16513), (1348, 16072), (1568, 13817), (2009, 10784), (2296, 9436), (2359, 9184), (2696, 8036), (4018, 5392), (4592, 4718)]