278839678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{11903}}^1$

素因数の和:11988

約数の個数: 32

約数和(自身を含む): 485968896

約数和(自身を除く): 207129218

約数列:

[1, 2, 13, 17, 26, 34, 53, 106, 221, 442, 689, 901, 1378, 1802, 11713, 11903, 23426, 23806, 154739, 202351, 309478, 404702, 630859, 1261718, 2630563, 5261126, 8201167, 10724603, 16402334, 21449206, 139419839, 278839678]

約数ペア:

[(1, 278839678), (2, 139419839), (13, 21449206), (17, 16402334), (26, 10724603), (34, 8201167), (53, 5261126), (106, 2630563), (221, 1261718), (442, 630859), (689, 404702), (901, 309478), (1378, 202351), (1802, 154739), (11713, 23806), (11903, 23426)]