28013349

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 19560219

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 107, 137, 147, 273, 321, 411, 637, 749, 959, 1391, 1781, 1911, 2247, 2877, 4173, 5243, 5343, 6713, 9737, 12467, 14659, 15729, 20139, 29211, 37401, 43977, 68159, 87269, 102613, 190567, 204477, 261807, 307839, 571701, 718291, 1333969, 2154873, 4001907, 9337783, 28013349]

約数ペア:

[(1, 28013349), (3, 9337783), (7, 4001907), (13, 2154873), (21, 1333969), (39, 718291), (49, 571701), (91, 307839), (107, 261807), (137, 204477), (147, 190567), (273, 102613), (321, 87269), (411, 68159), (637, 43977), (749, 37401), (959, 29211), (1391, 20139), (1781, 15729), (1911, 14659), (2247, 12467), (2877, 9737), (4173, 6713), (5243, 5343)]