20648740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1777}}^1$

素因数の和:1876

約数の個数: 48

約数和(自身を含む): 50182272

約数和(自身を除く): 29533532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1777, 2324, 2905, 3554, 5810, 7108, 8885, 11620, 12439, 17770, 24878, 35540, 49756, 62195, 124390, 147491, 248780, 294982, 589964, 737455, 1032437, 1474910, 2064874, 2949820, 4129748, 5162185, 10324370, 20648740]

約数ペア:

[(1, 20648740), (2, 10324370), (4, 5162185), (5, 4129748), (7, 2949820), (10, 2064874), (14, 1474910), (20, 1032437), (28, 737455), (35, 589964), (70, 294982), (83, 248780), (140, 147491), (166, 124390), (332, 62195), (415, 49756), (581, 35540), (830, 24878), (1162, 17770), (1660, 12439), (1777, 11620), (2324, 8885), (2905, 7108), (3554, 5810)]