20919190

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{4787}}^1$

素因数の和:4836

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 20449130

約数列:

[1, 2, 5, 10, 19, 23, 38, 46, 95, 115, 190, 230, 437, 874, 2185, 4370, 4787, 9574, 23935, 47870, 90953, 110101, 181906, 220202, 454765, 550505, 909530, 1101010, 2091919, 4183838, 10459595, 20919190]

約数ペア:

[(1, 20919190), (2, 10459595), (5, 4183838), (10, 2091919), (19, 1101010), (23, 909530), (38, 550505), (46, 454765), (95, 220202), (115, 181906), (190, 110101), (230, 90953), (437, 47870), (874, 23935), (2185, 9574), (4370, 4787)]