85781409

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{30713}}^1$

素因数の和:30749

約数の個数: 24

約数和(自身を含む): 140055840

約数和(自身を除く): 54274431

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 30713, 92139, 214991, 583547, 644973, 1504937, 1750641, 4084829, 4514811, 12254487, 28593803, 85781409]

約数ペア:

[(1, 85781409), (3, 28593803), (7, 12254487), (19, 4514811), (21, 4084829), (49, 1750641), (57, 1504937), (133, 644973), (147, 583547), (399, 214991), (931, 92139), (2793, 30713)]