51581649

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 81285120

約数和(自身を除く): 29703471

約数列:

[1, 3, 7, 21, 41, 123, 139, 287, 417, 431, 861, 973, 1293, 2919, 3017, 5699, 9051, 17097, 17671, 39893, 53013, 59909, 119679, 123697, 179727, 371091, 419363, 1258089, 2456269, 7368807, 17193883, 51581649]

約数ペア:

[(1, 51581649), (3, 17193883), (7, 7368807), (21, 2456269), (41, 1258089), (123, 419363), (139, 371091), (287, 179727), (417, 123697), (431, 119679), (861, 59909), (973, 53013), (1293, 39893), (2919, 17671), (3017, 17097), (5699, 9051)]