18986548

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 40521600

約数和(自身を除く): 21535052

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 89, 133, 178, 266, 356, 401, 532, 623, 802, 1246, 1604, 1691, 2492, 2807, 3382, 5614, 6764, 7619, 11228, 11837, 15238, 23674, 30476, 35689, 47348, 53333, 71378, 106666, 142756, 213332, 249823, 499646, 678091, 999292, 1356182, 2712364, 4746637, 9493274, 18986548]

約数ペア:

[(1, 18986548), (2, 9493274), (4, 4746637), (7, 2712364), (14, 1356182), (19, 999292), (28, 678091), (38, 499646), (76, 249823), (89, 213332), (133, 142756), (178, 106666), (266, 71378), (356, 53333), (401, 47348), (532, 35689), (623, 30476), (802, 23674), (1246, 15238), (1604, 11837), (1691, 11228), (2492, 7619), (2807, 6764), (3382, 5614)]