20791360

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1511}}^1$

素因数の和:1571

約数の個数: 56

約数和(自身を含む): 50694336

約数和(自身を除く): 29902976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 160, 172, 215, 320, 344, 430, 688, 860, 1376, 1511, 1720, 2752, 3022, 3440, 6044, 6880, 7555, 12088, 13760, 15110, 24176, 30220, 48352, 60440, 64973, 96704, 120880, 129946, 241760, 259892, 324865, 483520, 519784, 649730, 1039568, 1299460, 2079136, 2598920, 4158272, 5197840, 10395680, 20791360]

約数ペア:

[(1, 20791360), (2, 10395680), (4, 5197840), (5, 4158272), (8, 2598920), (10, 2079136), (16, 1299460), (20, 1039568), (32, 649730), (40, 519784), (43, 483520), (64, 324865), (80, 259892), (86, 241760), (160, 129946), (172, 120880), (215, 96704), (320, 64973), (344, 60440), (430, 48352), (688, 30220), (860, 24176), (1376, 15110), (1511, 13760), (1720, 12088), (2752, 7555), (3022, 6880), (3440, 6044)]