20805119980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4001}}^1\times {\mathrm{7027}}^1$

素因数の和:11074

約数の個数: 48

約数和(自身を含む): 44889185376

約数和(自身を除く): 24084065396

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 4001, 7027, 8002, 14054, 16004, 20005, 28108, 35135, 40010, 70270, 80020, 140540, 148037, 259999, 296074, 519998, 592148, 740185, 1039996, 1299995, 1480370, 2599990, 2960740, 5199980, 28115027, 56230054, 112460108, 140575135, 281150270, 562300540, 1040255999, 2080511998, 4161023996, 5201279995, 10402559990, 20805119980]

約数ペア:

[(1, 20805119980), (2, 10402559990), (4, 5201279995), (5, 4161023996), (10, 2080511998), (20, 1040255999), (37, 562300540), (74, 281150270), (148, 140575135), (185, 112460108), (370, 56230054), (740, 28115027), (4001, 5199980), (7027, 2960740), (8002, 2599990), (14054, 1480370), (16004, 1299995), (20005, 1039996), (28108, 740185), (35135, 592148), (40010, 519998), (70270, 296074), (80020, 259999), (140540, 148037)]