19118990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{971}}^1$

素因数の和:1168

約数の個数: 32

約数和(自身を含む): 37791360

約数和(自身を除く): 18672370

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 179, 358, 895, 971, 1790, 1942, 1969, 3938, 4855, 9710, 9845, 10681, 19690, 21362, 53405, 106810, 173809, 347618, 869045, 1738090, 1911899, 3823798, 9559495, 19118990]

約数ペア:

[(1, 19118990), (2, 9559495), (5, 3823798), (10, 1911899), (11, 1738090), (22, 869045), (55, 347618), (110, 173809), (179, 106810), (358, 53405), (895, 21362), (971, 19690), (1790, 10681), (1942, 9845), (1969, 9710), (3938, 4855)]