257280842

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{1471}}^1$

素因数の和:1555

約数の個数: 48

約数和(自身を含む): 491129856

約数和(自身を除く): 233849014

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 182, 217, 403, 434, 806, 961, 1471, 1922, 2821, 2942, 5642, 6727, 10297, 12493, 13454, 19123, 20594, 24986, 38246, 45601, 87451, 91202, 133861, 174902, 267722, 319207, 592813, 638414, 1185626, 1413631, 2827262, 4149691, 8299382, 9895417, 18377203, 19790834, 36754406, 128640421, 257280842]

約数ペア:

[(1, 257280842), (2, 128640421), (7, 36754406), (13, 19790834), (14, 18377203), (26, 9895417), (31, 8299382), (62, 4149691), (91, 2827262), (182, 1413631), (217, 1185626), (403, 638414), (434, 592813), (806, 319207), (961, 267722), (1471, 174902), (1922, 133861), (2821, 91202), (2942, 87451), (5642, 45601), (6727, 38246), (10297, 24986), (12493, 20594), (13454, 19123)]