260511290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:687

約数の個数: 64

約数和(自身を含む): 526417920

約数和(自身を除く): 265906630

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 127, 130, 155, 254, 310, 403, 509, 635, 806, 1018, 1270, 1651, 2015, 2545, 3302, 3937, 4030, 5090, 6617, 7874, 8255, 13234, 15779, 16510, 19685, 31558, 33085, 39370, 51181, 64643, 66170, 78895, 102362, 129286, 157790, 205127, 255905, 323215, 410254, 511810, 646430, 840359, 1025635, 1680718, 2003933, 2051270, 4007866, 4201795, 8403590, 10019665, 20039330, 26051129, 52102258, 130255645, 260511290]

約数ペア:

[(1, 260511290), (2, 130255645), (5, 52102258), (10, 26051129), (13, 20039330), (26, 10019665), (31, 8403590), (62, 4201795), (65, 4007866), (127, 2051270), (130, 2003933), (155, 1680718), (254, 1025635), (310, 840359), (403, 646430), (509, 511810), (635, 410254), (806, 323215), (1018, 255905), (1270, 205127), (1651, 157790), (2015, 129286), (2545, 102362), (3302, 78895), (3937, 66170), (4030, 64643), (5090, 51181), (6617, 39370), (7874, 33085), (8255, 31558), (13234, 19685), (15779, 16510)]