20406080

素因数分解:

$2^6\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1483}}^1$

素因数の和:1543

約数の個数: 56

約数和(自身を含む): 49755552

約数和(自身を除く): 29349472

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, 1483, 1720, 2752, 2966, 3440, 5932, 6880, 7415, 11864, 13760, 14830, 23728, 29660, 47456, 59320, 63769, 94912, 118640, 127538, 237280, 255076, 318845, 474560, 510152, 637690, 1020304, 1275380, 2040608, 2550760, 4081216, 5101520, 10203040, 20406080]

約数ペア:

[(1, 20406080), (2, 10203040), (4, 5101520), (5, 4081216), (8, 2550760), (10, 2040608), (16, 1275380), (20, 1020304), (32, 637690), (40, 510152), (43, 474560), (64, 318845), (80, 255076), (86, 237280), (160, 127538), (172, 118640), (215, 94912), (320, 63769), (344, 59320), (430, 47456), (688, 29660), (860, 23728), (1376, 14830), (1483, 13760), (1720, 11864), (2752, 7415), (2966, 6880), (3440, 5932)]