21731108

素因数分解:

$2^2\times 7^3\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:409

約数の個数: 48

約数和(自身を含む): 45427200

約数和(自身を除く): 23696092

約数列:

[1, 2, 4, 7, 14, 28, 47, 49, 94, 98, 188, 196, 329, 337, 343, 658, 674, 686, 1316, 1348, 1372, 2303, 2359, 4606, 4718, 9212, 9436, 15839, 16121, 16513, 31678, 32242, 33026, 63356, 64484, 66052, 110873, 115591, 221746, 231182, 443492, 462364, 776111, 1552222, 3104444, 5432777, 10865554, 21731108]

約数ペア:

[(1, 21731108), (2, 10865554), (4, 5432777), (7, 3104444), (14, 1552222), (28, 776111), (47, 462364), (49, 443492), (94, 231182), (98, 221746), (188, 115591), (196, 110873), (329, 66052), (337, 64484), (343, 63356), (658, 33026), (674, 32242), (686, 31678), (1316, 16513), (1348, 16121), (1372, 15839), (2303, 9436), (2359, 9212), (4606, 4718)]