19398071

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1$

素因数の和:144

約数の個数: 48

約数和(自身を含む): 27332640

約数和(自身を除く): 7934569

約数列:

[1, 7, 11, 17, 29, 49, 73, 77, 119, 187, 203, 319, 493, 511, 539, 803, 833, 1241, 1309, 1421, 2117, 2233, 3451, 3577, 5423, 5621, 8687, 9163, 13651, 14819, 15631, 23287, 24157, 35989, 37961, 39347, 60809, 95557, 103733, 163009, 251923, 265727, 395879, 668899, 1141063, 1763461, 2771153, 19398071]

約数ペア:

[(1, 19398071), (7, 2771153), (11, 1763461), (17, 1141063), (29, 668899), (49, 395879), (73, 265727), (77, 251923), (119, 163009), (187, 103733), (203, 95557), (319, 60809), (493, 39347), (511, 37961), (539, 35989), (803, 24157), (833, 23287), (1241, 15631), (1309, 14819), (1421, 13651), (2117, 9163), (2233, 8687), (3451, 5621), (3577, 5423)]