17986479

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3947}}^1$

素因数の和:3995

約数の個数: 24

約数和(自身を含む): 28804608

約数和(自身を除く): 10818129

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 3947, 4557, 11841, 27629, 82887, 122357, 193403, 367071, 580209, 856499, 2569497, 5995493, 17986479]

約数ペア:

[(1, 17986479), (3, 5995493), (7, 2569497), (21, 856499), (31, 580209), (49, 367071), (93, 193403), (147, 122357), (217, 82887), (651, 27629), (1519, 11841), (3947, 4557)]