21040383

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2083}}^1$

素因数の和:2143

約数の個数: 32

約数和(自身を含む): 35478016

約数和(自身を除く): 14437633

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 259, 273, 481, 777, 1443, 2083, 3367, 6249, 10101, 14581, 27079, 43743, 77071, 81237, 189553, 231213, 539497, 568659, 1001923, 1618491, 3005769, 7013461, 21040383]

約数ペア:

[(1, 21040383), (3, 7013461), (7, 3005769), (13, 1618491), (21, 1001923), (37, 568659), (39, 539497), (91, 231213), (111, 189553), (259, 81237), (273, 77071), (481, 43743), (777, 27079), (1443, 14581), (2083, 10101), (3367, 6249)]