21509046

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5407}}^1$

素因数の和:5445

約数の個数: 48

約数和(自身を含む): 53149824

約数和(自身を除く): 31640778

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5407, 10814, 16221, 32442, 48663, 70291, 91919, 97326, 140582, 183838, 210873, 275757, 421746, 551514, 632619, 827271, 1194947, 1265238, 1654542, 2389894, 3584841, 7169682, 10754523, 21509046]

約数ペア:

[(1, 21509046), (2, 10754523), (3, 7169682), (6, 3584841), (9, 2389894), (13, 1654542), (17, 1265238), (18, 1194947), (26, 827271), (34, 632619), (39, 551514), (51, 421746), (78, 275757), (102, 210873), (117, 183838), (153, 140582), (221, 97326), (234, 91919), (306, 70291), (442, 48663), (663, 32442), (1326, 16221), (1989, 10814), (3978, 5407)]