19784140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1049}}^1$

素因数の和:1122

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 24668660

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 115, 164, 205, 230, 410, 460, 820, 943, 1049, 1886, 2098, 3772, 4196, 4715, 5245, 9430, 10490, 18860, 20980, 24127, 43009, 48254, 86018, 96508, 120635, 172036, 215045, 241270, 430090, 482540, 860180, 989207, 1978414, 3956828, 4946035, 9892070, 19784140]

約数ペア:

[(1, 19784140), (2, 9892070), (4, 4946035), (5, 3956828), (10, 1978414), (20, 989207), (23, 860180), (41, 482540), (46, 430090), (82, 241270), (92, 215045), (115, 172036), (164, 120635), (205, 96508), (230, 86018), (410, 48254), (460, 43009), (820, 24127), (943, 20980), (1049, 18860), (1886, 10490), (2098, 9430), (3772, 5245), (4196, 4715)]