19957366

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2251}}^1$

素因数の和:2308

約数の個数: 32

約数和(自身を含む): 36320256

約数和(自身を除く): 16362890

約数列:

[1, 2, 11, 13, 22, 26, 31, 62, 143, 286, 341, 403, 682, 806, 2251, 4433, 4502, 8866, 24761, 29263, 49522, 58526, 69781, 139562, 321893, 643786, 767591, 907153, 1535182, 1814306, 9978683, 19957366]

約数ペア:

[(1, 19957366), (2, 9978683), (11, 1814306), (13, 1535182), (22, 907153), (26, 767591), (31, 643786), (62, 321893), (143, 139562), (286, 69781), (341, 58526), (403, 49522), (682, 29263), (806, 24761), (2251, 8866), (4433, 4502)]