21660093

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{499}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 17651907

約数列:

[1, 3, 7, 9, 13, 21, 39, 53, 63, 91, 117, 159, 273, 371, 477, 499, 689, 819, 1113, 1497, 2067, 3339, 3493, 4491, 4823, 6201, 6487, 10479, 14469, 19461, 26447, 31437, 43407, 45409, 58383, 79341, 136227, 185129, 238023, 343811, 408681, 555387, 1031433, 1666161, 2406677, 3094299, 7220031, 21660093]

約数ペア:

[(1, 21660093), (3, 7220031), (7, 3094299), (9, 2406677), (13, 1666161), (21, 1031433), (39, 555387), (53, 408681), (63, 343811), (91, 238023), (117, 185129), (159, 136227), (273, 79341), (371, 58383), (477, 45409), (499, 43407), (689, 31437), (819, 26447), (1113, 19461), (1497, 14469), (2067, 10479), (3339, 6487), (3493, 6201), (4491, 4823)]