245156990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:657

約数の個数: 64

約数和(自身を含む): 495452160

約数和(自身を除く): 250295170

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 127, 130, 155, 254, 310, 403, 479, 635, 806, 958, 1270, 1651, 2015, 2395, 3302, 3937, 4030, 4790, 6227, 7874, 8255, 12454, 14849, 16510, 19685, 29698, 31135, 39370, 51181, 60833, 62270, 74245, 102362, 121666, 148490, 193037, 255905, 304165, 386074, 511810, 608330, 790829, 965185, 1581658, 1885823, 1930370, 3771646, 3954145, 7908290, 9429115, 18858230, 24515699, 49031398, 122578495, 245156990]

約数ペア:

[(1, 245156990), (2, 122578495), (5, 49031398), (10, 24515699), (13, 18858230), (26, 9429115), (31, 7908290), (62, 3954145), (65, 3771646), (127, 1930370), (130, 1885823), (155, 1581658), (254, 965185), (310, 790829), (403, 608330), (479, 511810), (635, 386074), (806, 304165), (958, 255905), (1270, 193037), (1651, 148490), (2015, 121666), (2395, 102362), (3302, 74245), (3937, 62270), (4030, 60833), (4790, 51181), (6227, 39370), (7874, 31135), (8255, 29698), (12454, 19685), (14849, 16510)]