19389880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 47462400

約数和(自身を除く): 28072520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 380, 589, 620, 760, 823, 1178, 1240, 1646, 2356, 2945, 3292, 4115, 4712, 5890, 6584, 8230, 11780, 15637, 16460, 23560, 25513, 31274, 32920, 51026, 62548, 78185, 102052, 125096, 127565, 156370, 204104, 255130, 312740, 484747, 510260, 625480, 969494, 1020520, 1938988, 2423735, 3877976, 4847470, 9694940, 19389880]

約数ペア:

[(1, 19389880), (2, 9694940), (4, 4847470), (5, 3877976), (8, 2423735), (10, 1938988), (19, 1020520), (20, 969494), (31, 625480), (38, 510260), (40, 484747), (62, 312740), (76, 255130), (95, 204104), (124, 156370), (152, 127565), (155, 125096), (190, 102052), (248, 78185), (310, 62548), (380, 51026), (589, 32920), (620, 31274), (760, 25513), (823, 23560), (1178, 16460), (1240, 15637), (1646, 11780), (2356, 8230), (2945, 6584), (3292, 5890), (4115, 4712)]