21591955

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3299}}^1$

素因数の和:3339

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12622445

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3299, 6545, 16495, 23093, 36289, 56083, 115465, 181445, 254023, 280415, 392581, 616913, 1270115, 1962905, 3084565, 4318391, 21591955]

約数ペア:

[(1, 21591955), (5, 4318391), (7, 3084565), (11, 1962905), (17, 1270115), (35, 616913), (55, 392581), (77, 280415), (85, 254023), (119, 181445), (187, 115465), (385, 56083), (595, 36289), (935, 23093), (1309, 16495), (3299, 6545)]