20740328

素因数分解:

$2^3\times 7^2\times {\mathrm{157}}^1\times {\mathrm{337}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 45660420

約数和(自身を除く): 24920092

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 157, 196, 314, 337, 392, 628, 674, 1099, 1256, 1348, 2198, 2359, 2696, 4396, 4718, 7693, 8792, 9436, 15386, 16513, 18872, 30772, 33026, 52909, 61544, 66052, 105818, 132104, 211636, 370363, 423272, 740726, 1481452, 2592541, 2962904, 5185082, 10370164, 20740328]

約数ペア:

[(1, 20740328), (2, 10370164), (4, 5185082), (7, 2962904), (8, 2592541), (14, 1481452), (28, 740726), (49, 423272), (56, 370363), (98, 211636), (157, 132104), (196, 105818), (314, 66052), (337, 61544), (392, 52909), (628, 33026), (674, 30772), (1099, 18872), (1256, 16513), (1348, 15386), (2198, 9436), (2359, 8792), (2696, 7693), (4396, 4718)]