81408369

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{373}}^1\times {\mathrm{547}}^1$

素因数の和:949

約数の個数: 32

約数和(自身を含む): 131169280

約数和(自身を除く): 49760911

約数列:

[1, 3, 7, 19, 21, 57, 133, 373, 399, 547, 1119, 1641, 2611, 3829, 7087, 7833, 10393, 11487, 21261, 31179, 49609, 72751, 148827, 204031, 218253, 612093, 1428217, 3876589, 4284651, 11629767, 27136123, 81408369]

約数ペア:

[(1, 81408369), (3, 27136123), (7, 11629767), (19, 4284651), (21, 3876589), (57, 1428217), (133, 612093), (373, 218253), (399, 204031), (547, 148827), (1119, 72751), (1641, 49609), (2611, 31179), (3829, 21261), (7087, 11487), (7833, 10393)]