21626397

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 36324288

約数和(自身を除く): 14697891

約数列:

[1, 3, 9, 13, 17, 39, 51, 83, 117, 131, 153, 221, 249, 393, 663, 747, 1079, 1179, 1411, 1703, 1989, 2227, 3237, 4233, 5109, 6681, 9711, 10873, 12699, 15327, 18343, 20043, 28951, 32619, 55029, 86853, 97857, 141349, 165087, 184841, 260559, 424047, 554523, 1272141, 1663569, 2402933, 7208799, 21626397]

約数ペア:

[(1, 21626397), (3, 7208799), (9, 2402933), (13, 1663569), (17, 1272141), (39, 554523), (51, 424047), (83, 260559), (117, 184841), (131, 165087), (153, 141349), (221, 97857), (249, 86853), (393, 55029), (663, 32619), (747, 28951), (1079, 20043), (1179, 18343), (1411, 15327), (1703, 12699), (1989, 10873), (2227, 9711), (3237, 6681), (4233, 5109)]