21377774

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 37152000

約数和(自身を除く): 15774226

約数列:

[1, 2, 11, 19, 22, 38, 199, 209, 257, 398, 418, 514, 2189, 2827, 3781, 4378, 4883, 5654, 7562, 9766, 41591, 51143, 53713, 83182, 102286, 107426, 562573, 971717, 1125146, 1943434, 10688887, 21377774]

約数ペア:

[(1, 21377774), (2, 10688887), (11, 1943434), (19, 1125146), (22, 971717), (38, 562573), (199, 107426), (209, 102286), (257, 83182), (398, 53713), (418, 51143), (514, 41591), (2189, 9766), (2827, 7562), (3781, 5654), (4378, 4883)]