18936970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 39223296

約数和(自身を除く): 20286326

約数列:

[1, 2, 5, 10, 13, 26, 31, 37, 62, 65, 74, 127, 130, 155, 185, 254, 310, 370, 403, 481, 635, 806, 962, 1147, 1270, 1651, 2015, 2294, 2405, 3302, 3937, 4030, 4699, 4810, 5735, 7874, 8255, 9398, 11470, 14911, 16510, 19685, 23495, 29822, 39370, 46990, 51181, 61087, 74555, 102362, 122174, 145669, 149110, 255905, 291338, 305435, 511810, 610870, 728345, 1456690, 1893697, 3787394, 9468485, 18936970]

約数ペア:

[(1, 18936970), (2, 9468485), (5, 3787394), (10, 1893697), (13, 1456690), (26, 728345), (31, 610870), (37, 511810), (62, 305435), (65, 291338), (74, 255905), (127, 149110), (130, 145669), (155, 122174), (185, 102362), (254, 74555), (310, 61087), (370, 51181), (403, 46990), (481, 39370), (635, 29822), (806, 23495), (962, 19685), (1147, 16510), (1270, 14911), (1651, 11470), (2015, 9398), (2294, 8255), (2405, 7874), (3302, 5735), (3937, 4810), (4030, 4699)]