18991544

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1277}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 42097320

約数和(自身を除く): 23105776

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1277, 1352, 1859, 2554, 3718, 5108, 7436, 10216, 14047, 14872, 16601, 28094, 33202, 56188, 66404, 112376, 132808, 182611, 215813, 365222, 431626, 730444, 863252, 1460888, 1726504, 2373943, 4747886, 9495772, 18991544]

約数ペア:

[(1, 18991544), (2, 9495772), (4, 4747886), (8, 2373943), (11, 1726504), (13, 1460888), (22, 863252), (26, 730444), (44, 431626), (52, 365222), (88, 215813), (104, 182611), (143, 132808), (169, 112376), (286, 66404), (338, 56188), (572, 33202), (676, 28094), (1144, 16601), (1277, 14872), (1352, 14047), (1859, 10216), (2554, 7436), (3718, 5108)]