28206815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1319}}^1$

素因数の和:1391

約数の個数: 32

約数和(自身を含む): 42577920

約数和(自身を除く): 14371105

約数列:

[1, 5, 7, 13, 35, 47, 65, 91, 235, 329, 455, 611, 1319, 1645, 3055, 4277, 6595, 9233, 17147, 21385, 46165, 61993, 85735, 120029, 309965, 433951, 600145, 805909, 2169755, 4029545, 5641363, 28206815]

約数ペア:

[(1, 28206815), (5, 5641363), (7, 4029545), (13, 2169755), (35, 805909), (47, 600145), (65, 433951), (91, 309965), (235, 120029), (329, 85735), (455, 61993), (611, 46165), (1319, 21385), (1645, 17147), (3055, 9233), (4277, 6595)]