201780475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{797}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 290918880

約数和(自身を除く): 89138405

約数列:

[1, 5, 13, 19, 25, 41, 65, 95, 205, 247, 325, 475, 533, 779, 797, 1025, 1235, 2665, 3895, 3985, 6175, 10127, 10361, 13325, 15143, 19475, 19925, 32677, 50635, 51805, 75715, 163385, 196859, 253175, 259025, 378575, 424801, 620863, 816925, 984295, 2124005, 3104315, 4921475, 8071219, 10620025, 15521575, 40356095, 201780475]

約数ペア:

[(1, 201780475), (5, 40356095), (13, 15521575), (19, 10620025), (25, 8071219), (41, 4921475), (65, 3104315), (95, 2124005), (205, 984295), (247, 816925), (325, 620863), (475, 424801), (533, 378575), (779, 259025), (797, 253175), (1025, 196859), (1235, 163385), (2665, 75715), (3895, 51805), (3985, 50635), (6175, 32677), (10127, 19925), (10361, 19475), (13325, 15143)]