20663775

素因数分解:

$3^3\times 5^2\times {\mathrm{11}}^3\times {\mathrm{23}}^1$

素因数の和:75

約数の個数: 96

約数和(自身を含む): 43568640

約数和(自身を除く): 22904865

約数列:

[1, 3, 5, 9, 11, 15, 23, 25, 27, 33, 45, 55, 69, 75, 99, 115, 121, 135, 165, 207, 225, 253, 275, 297, 345, 363, 495, 575, 605, 621, 675, 759, 825, 1035, 1089, 1265, 1331, 1485, 1725, 1815, 2277, 2475, 2783, 3025, 3105, 3267, 3795, 3993, 5175, 5445, 6325, 6655, 6831, 7425, 8349, 9075, 11385, 11979, 13915, 15525, 16335, 18975, 19965, 25047, 27225, 30613, 33275, 34155, 35937, 41745, 56925, 59895, 69575, 75141, 81675, 91839, 99825, 125235, 153065, 170775, 179685, 208725, 275517, 299475, 375705, 459195, 626175, 765325, 826551, 898425, 1377585, 1878525, 2295975, 4132755, 6887925, 20663775]

約数ペア:

[(1, 20663775), (3, 6887925), (5, 4132755), (9, 2295975), (11, 1878525), (15, 1377585), (23, 898425), (25, 826551), (27, 765325), (33, 626175), (45, 459195), (55, 375705), (69, 299475), (75, 275517), (99, 208725), (115, 179685), (121, 170775), (135, 153065), (165, 125235), (207, 99825), (225, 91839), (253, 81675), (275, 75141), (297, 69575), (345, 59895), (363, 56925), (495, 41745), (575, 35937), (605, 34155), (621, 33275), (675, 30613), (759, 27225), (825, 25047), (1035, 19965), (1089, 18975), (1265, 16335), (1331, 15525), (1485, 13915), (1725, 11979), (1815, 11385), (2277, 9075), (2475, 8349), (2783, 7425), (3025, 6831), (3105, 6655), (3267, 6325), (3795, 5445), (3993, 5175)]