19917678

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{13121}}^1$

素因数の和:13160

約数の個数: 32

約数和(自身を含む): 45349632

約数和(自身を除く): 25431954

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 138, 253, 506, 759, 1518, 13121, 26242, 39363, 78726, 144331, 288662, 301783, 432993, 603566, 865986, 905349, 1810698, 3319613, 6639226, 9958839, 19917678]

約数ペア:

[(1, 19917678), (2, 9958839), (3, 6639226), (6, 3319613), (11, 1810698), (22, 905349), (23, 865986), (33, 603566), (46, 432993), (66, 301783), (69, 288662), (138, 144331), (253, 78726), (506, 39363), (759, 26242), (1518, 13121)]