20841249

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 34046784

約数和(自身を除く): 13205535

約数列:

[1, 3, 11, 13, 33, 37, 39, 101, 111, 143, 169, 303, 407, 429, 481, 507, 1111, 1221, 1313, 1443, 1859, 3333, 3737, 3939, 5291, 5577, 6253, 11211, 14443, 15873, 17069, 18759, 41107, 43329, 48581, 51207, 68783, 123321, 145743, 187759, 206349, 534391, 563277, 631553, 1603173, 1894659, 6947083, 20841249]

約数ペア:

[(1, 20841249), (3, 6947083), (11, 1894659), (13, 1603173), (33, 631553), (37, 563277), (39, 534391), (101, 206349), (111, 187759), (143, 145743), (169, 123321), (303, 68783), (407, 51207), (429, 48581), (481, 43329), (507, 41107), (1111, 18759), (1221, 17069), (1313, 15873), (1443, 14443), (1859, 11211), (3333, 6253), (3737, 5577), (3939, 5291)]