80643790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 155539440

約数和(自身を除く): 74895650

約数列:

[1, 2, 5, 10, 19, 38, 89, 95, 178, 190, 251, 361, 445, 502, 722, 890, 1255, 1691, 1805, 2510, 3382, 3610, 4769, 8455, 9538, 16910, 22339, 23845, 32129, 44678, 47690, 64258, 90611, 111695, 160645, 181222, 223390, 321290, 424441, 453055, 848882, 906110, 2122205, 4244410, 8064379, 16128758, 40321895, 80643790]

約数ペア:

[(1, 80643790), (2, 40321895), (5, 16128758), (10, 8064379), (19, 4244410), (38, 2122205), (89, 906110), (95, 848882), (178, 453055), (190, 424441), (251, 321290), (361, 223390), (445, 181222), (502, 160645), (722, 111695), (890, 90611), (1255, 64258), (1691, 47690), (1805, 44678), (2510, 32129), (3382, 23845), (3610, 22339), (4769, 16910), (8455, 9538)]