21260265

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3517}}^1$

素因数の和:3569

約数の個数: 32

約数和(自身を含む): 37825536

約数和(自身を除く): 16565271

約数列:

[1, 3, 5, 13, 15, 31, 39, 65, 93, 155, 195, 403, 465, 1209, 2015, 3517, 6045, 10551, 17585, 45721, 52755, 109027, 137163, 228605, 327081, 545135, 685815, 1417351, 1635405, 4252053, 7086755, 21260265]

約数ペア:

[(1, 21260265), (3, 7086755), (5, 4252053), (13, 1635405), (15, 1417351), (31, 685815), (39, 545135), (65, 327081), (93, 228605), (155, 137163), (195, 109027), (403, 52755), (465, 45721), (1209, 17585), (2015, 10551), (3517, 6045)]