19428178

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 39626496

約数和(自身を除く): 20198318

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 41, 77, 82, 119, 154, 181, 187, 238, 287, 362, 374, 451, 574, 697, 902, 1267, 1309, 1394, 1991, 2534, 2618, 3077, 3157, 3982, 4879, 6154, 6314, 7421, 7667, 9758, 13937, 14842, 15334, 21539, 27874, 33847, 43078, 51947, 53669, 67694, 81631, 103894, 107338, 126157, 163262, 236929, 252314, 473858, 571417, 883099, 1142834, 1387727, 1766198, 2775454, 9714089, 19428178]

約数ペア:

[(1, 19428178), (2, 9714089), (7, 2775454), (11, 1766198), (14, 1387727), (17, 1142834), (22, 883099), (34, 571417), (41, 473858), (77, 252314), (82, 236929), (119, 163262), (154, 126157), (181, 107338), (187, 103894), (238, 81631), (287, 67694), (362, 53669), (374, 51947), (451, 43078), (574, 33847), (697, 27874), (902, 21539), (1267, 15334), (1309, 14842), (1394, 13937), (1991, 9758), (2534, 7667), (2618, 7421), (3077, 6314), (3157, 6154), (3982, 4879)]