20390524

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{277}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 44835840

約数和(自身を除く): 24445316

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 239, 277, 308, 478, 554, 956, 1108, 1673, 1939, 2629, 3047, 3346, 3878, 5258, 6094, 6692, 7756, 10516, 12188, 18403, 21329, 36806, 42658, 66203, 73612, 85316, 132406, 264812, 463421, 728233, 926842, 1456466, 1853684, 2912932, 5097631, 10195262, 20390524]

約数ペア:

[(1, 20390524), (2, 10195262), (4, 5097631), (7, 2912932), (11, 1853684), (14, 1456466), (22, 926842), (28, 728233), (44, 463421), (77, 264812), (154, 132406), (239, 85316), (277, 73612), (308, 66203), (478, 42658), (554, 36806), (956, 21329), (1108, 18403), (1673, 12188), (1939, 10516), (2629, 7756), (3047, 6692), (3346, 6094), (3878, 5258)]