21745936

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{337}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 43798040

約数和(自身を除く): 22052104

約数列:

[1, 2, 4, 8, 16, 37, 74, 109, 148, 218, 296, 337, 436, 592, 674, 872, 1348, 1744, 2696, 4033, 5392, 8066, 12469, 16132, 24938, 32264, 36733, 49876, 64528, 73466, 99752, 146932, 199504, 293864, 587728, 1359121, 2718242, 5436484, 10872968, 21745936]

約数ペア:

[(1, 21745936), (2, 10872968), (4, 5436484), (8, 2718242), (16, 1359121), (37, 587728), (74, 293864), (109, 199504), (148, 146932), (218, 99752), (296, 73466), (337, 64528), (436, 49876), (592, 36733), (674, 32264), (872, 24938), (1348, 16132), (1744, 12469), (2696, 8066), (4033, 5392)]