20513302370

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2557}}^1\times {\mathrm{72931}}^1$

素因数の和:75506

約数の個数: 32

約数和(自身を含む): 40296972096

約数和(自身を除く): 19783669726

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 2557, 5114, 12785, 25570, 28127, 56254, 72931, 140635, 145862, 281270, 364655, 729310, 802241, 1604482, 4011205, 8022410, 186484567, 372969134, 932422835, 1864845670, 2051330237, 4102660474, 10256651185, 20513302370]

約数ペア:

[(1, 20513302370), (2, 10256651185), (5, 4102660474), (10, 2051330237), (11, 1864845670), (22, 932422835), (55, 372969134), (110, 186484567), (2557, 8022410), (5114, 4011205), (12785, 1604482), (25570, 802241), (28127, 729310), (56254, 364655), (72931, 281270), (140635, 145862)]