81183920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{27427}}^1$

素因数の和:27477

約数の個数: 40

約数和(自身を含む): 193861104

約数和(自身を除く): 112677184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 27427, 54854, 109708, 137135, 219416, 274270, 438832, 548540, 1014799, 1097080, 2029598, 2194160, 4059196, 5073995, 8118392, 10147990, 16236784, 20295980, 40591960, 81183920]

約数ペア:

[(1, 81183920), (2, 40591960), (4, 20295980), (5, 16236784), (8, 10147990), (10, 8118392), (16, 5073995), (20, 4059196), (37, 2194160), (40, 2029598), (74, 1097080), (80, 1014799), (148, 548540), (185, 438832), (296, 274270), (370, 219416), (592, 137135), (740, 109708), (1480, 54854), (2960, 27427)]