20893120

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:725

約数の個数: 56

約数和(自身を含む): 50292000

約数和(自身を除く): 29398880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 545, 599, 872, 1090, 1198, 1744, 2180, 2396, 2995, 3488, 4360, 4792, 5990, 6976, 8720, 9584, 11980, 17440, 19168, 23960, 34880, 38336, 47920, 65291, 95840, 130582, 191680, 261164, 326455, 522328, 652910, 1044656, 1305820, 2089312, 2611640, 4178624, 5223280, 10446560, 20893120]

約数ペア:

[(1, 20893120), (2, 10446560), (4, 5223280), (5, 4178624), (8, 2611640), (10, 2089312), (16, 1305820), (20, 1044656), (32, 652910), (40, 522328), (64, 326455), (80, 261164), (109, 191680), (160, 130582), (218, 95840), (320, 65291), (436, 47920), (545, 38336), (599, 34880), (872, 23960), (1090, 19168), (1198, 17440), (1744, 11980), (2180, 9584), (2396, 8720), (2995, 6976), (3488, 5990), (4360, 4792)]