2778685

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 4257792

約数和(自身を除く): 1479107

約数列:

[1, 5, 7, 13, 31, 35, 65, 91, 155, 197, 217, 403, 455, 985, 1085, 1379, 2015, 2561, 2821, 6107, 6895, 12805, 14105, 17927, 30535, 42749, 79391, 89635, 213745, 396955, 555737, 2778685]

約数ペア:

[(1, 2778685), (5, 555737), (7, 396955), (13, 213745), (31, 89635), (35, 79391), (65, 42749), (91, 30535), (155, 17927), (197, 14105), (217, 12805), (403, 6895), (455, 6107), (985, 2821), (1085, 2561), (1379, 2015)]