31157945

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^2$

素因数の和:150

約数の個数: 48

約数和(自身を含む): 48534528

約数和(自身を除く): 17376583

約数列:

[1, 5, 7, 13, 31, 35, 47, 65, 91, 155, 217, 235, 329, 403, 455, 611, 1085, 1457, 1645, 2015, 2209, 2821, 3055, 4277, 7285, 10199, 11045, 14105, 15463, 18941, 21385, 28717, 50995, 68479, 77315, 94705, 132587, 143585, 201019, 342395, 479353, 662935, 890227, 1005095, 2396765, 4451135, 6231589, 31157945]

約数ペア:

[(1, 31157945), (5, 6231589), (7, 4451135), (13, 2396765), (31, 1005095), (35, 890227), (47, 662935), (65, 479353), (91, 342395), (155, 201019), (217, 143585), (235, 132587), (329, 94705), (403, 77315), (455, 68479), (611, 50995), (1085, 28717), (1457, 21385), (1645, 18941), (2015, 15463), (2209, 14105), (2821, 11045), (3055, 10199), (4277, 7285)]