221880841

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{709}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 289452800

約数和(自身を除く): 67571959

約数列:

[1, 7, 13, 19, 91, 133, 181, 247, 709, 1267, 1729, 2353, 3439, 4963, 9217, 13471, 16471, 24073, 44707, 64519, 94297, 128329, 175123, 312949, 898303, 1225861, 1668277, 2438251, 11677939, 17067757, 31697263, 221880841]

約数ペア:

[(1, 221880841), (7, 31697263), (13, 17067757), (19, 11677939), (91, 2438251), (133, 1668277), (181, 1225861), (247, 898303), (709, 312949), (1267, 175123), (1729, 128329), (2353, 94297), (3439, 64519), (4963, 44707), (9217, 24073), (13471, 16471)]