19901838

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:453

約数の個数: 48

約数和(自身を含む): 44432640

約数和(自身を除く): 24530802

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 79, 121, 158, 237, 242, 347, 363, 474, 694, 726, 869, 1041, 1738, 2082, 2607, 3817, 5214, 7634, 9559, 11451, 19118, 22902, 27413, 28677, 41987, 54826, 57354, 82239, 83974, 125961, 164478, 251922, 301543, 603086, 904629, 1809258, 3316973, 6633946, 9950919, 19901838]

約数ペア:

[(1, 19901838), (2, 9950919), (3, 6633946), (6, 3316973), (11, 1809258), (22, 904629), (33, 603086), (66, 301543), (79, 251922), (121, 164478), (158, 125961), (237, 83974), (242, 82239), (347, 57354), (363, 54826), (474, 41987), (694, 28677), (726, 27413), (869, 22902), (1041, 19118), (1738, 11451), (2082, 9559), (2607, 7634), (3817, 5214)]