21497512

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{607}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 42681600

約数和(自身を除く): 21184088

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 233, 466, 607, 932, 1214, 1864, 2428, 4427, 4856, 8854, 11533, 17708, 23066, 35416, 46132, 92264, 141431, 282862, 565724, 1131448, 2687189, 5374378, 10748756, 21497512]

約数ペア:

[(1, 21497512), (2, 10748756), (4, 5374378), (8, 2687189), (19, 1131448), (38, 565724), (76, 282862), (152, 141431), (233, 92264), (466, 46132), (607, 35416), (932, 23066), (1214, 17708), (1864, 11533), (2428, 8854), (4427, 4856)]