20585180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13367}}^1$

素因数の和:13394

約数の個数: 48

約数和(自身を含む): 53899776

約数和(自身を除く): 33314596

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13367, 26734, 53468, 66835, 93569, 133670, 147037, 187138, 267340, 294074, 374276, 467845, 588148, 735185, 935690, 1029259, 1470370, 1871380, 2058518, 2940740, 4117036, 5146295, 10292590, 20585180]

約数ペア:

[(1, 20585180), (2, 10292590), (4, 5146295), (5, 4117036), (7, 2940740), (10, 2058518), (11, 1871380), (14, 1470370), (20, 1029259), (22, 935690), (28, 735185), (35, 588148), (44, 467845), (55, 374276), (70, 294074), (77, 267340), (110, 187138), (140, 147037), (154, 133670), (220, 93569), (308, 66835), (385, 53468), (770, 26734), (1540, 13367)]