20888885

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 28062720

約数和(自身を除く): 7173835

約数列:

[1, 5, 19, 31, 41, 95, 155, 173, 205, 589, 779, 865, 1271, 2945, 3287, 3895, 5363, 6355, 7093, 16435, 24149, 26815, 35465, 101897, 120745, 134767, 219883, 509485, 673835, 1099415, 4177777, 20888885]

約数ペア:

[(1, 20888885), (5, 4177777), (19, 1099415), (31, 673835), (41, 509485), (95, 219883), (155, 134767), (173, 120745), (205, 101897), (589, 35465), (779, 26815), (865, 24149), (1271, 16435), (2945, 7093), (3287, 6355), (3895, 5363)]