20605880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1427}}^1$

素因数の和:1476

約数の個数: 48

約数和(自身を含む): 48966120

約数和(自身を除く): 28360240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1427, 1444, 1805, 2854, 2888, 3610, 5708, 7135, 7220, 11416, 14270, 14440, 27113, 28540, 54226, 57080, 108452, 135565, 216904, 271130, 515147, 542260, 1030294, 1084520, 2060588, 2575735, 4121176, 5151470, 10302940, 20605880]

約数ペア:

[(1, 20605880), (2, 10302940), (4, 5151470), (5, 4121176), (8, 2575735), (10, 2060588), (19, 1084520), (20, 1030294), (38, 542260), (40, 515147), (76, 271130), (95, 216904), (152, 135565), (190, 108452), (361, 57080), (380, 54226), (722, 28540), (760, 27113), (1427, 14440), (1444, 14270), (1805, 11416), (2854, 7220), (2888, 7135), (3610, 5708)]