257459715

素因数分解:

$3^5\times 5^1\times {\mathrm{313}}^1\times {\mathrm{677}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 464956128

約数和(自身を除く): 207496413

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 313, 405, 677, 939, 1215, 1565, 2031, 2817, 3385, 4695, 6093, 8451, 10155, 14085, 18279, 25353, 30465, 42255, 54837, 76059, 91395, 126765, 164511, 211901, 274185, 380295, 635703, 822555, 1059505, 1907109, 3178515, 5721327, 9535545, 17163981, 28606635, 51491943, 85819905, 257459715]

約数ペア:

[(1, 257459715), (3, 85819905), (5, 51491943), (9, 28606635), (15, 17163981), (27, 9535545), (45, 5721327), (81, 3178515), (135, 1907109), (243, 1059505), (313, 822555), (405, 635703), (677, 380295), (939, 274185), (1215, 211901), (1565, 164511), (2031, 126765), (2817, 91395), (3385, 76059), (4695, 54837), (6093, 42255), (8451, 30465), (10155, 25353), (14085, 18279)]