20171800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 52429680

約数和(自身を除く): 32257880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 53, 55, 88, 100, 106, 110, 173, 200, 212, 220, 265, 275, 346, 424, 440, 530, 550, 583, 692, 865, 1060, 1100, 1166, 1325, 1384, 1730, 1903, 2120, 2200, 2332, 2650, 2915, 3460, 3806, 4325, 4664, 5300, 5830, 6920, 7612, 8650, 9169, 9515, 10600, 11660, 14575, 15224, 17300, 18338, 19030, 23320, 29150, 34600, 36676, 38060, 45845, 47575, 58300, 73352, 76120, 91690, 95150, 100859, 116600, 183380, 190300, 201718, 229225, 366760, 380600, 403436, 458450, 504295, 806872, 916900, 1008590, 1833800, 2017180, 2521475, 4034360, 5042950, 10085900, 20171800]

約数ペア:

[(1, 20171800), (2, 10085900), (4, 5042950), (5, 4034360), (8, 2521475), (10, 2017180), (11, 1833800), (20, 1008590), (22, 916900), (25, 806872), (40, 504295), (44, 458450), (50, 403436), (53, 380600), (55, 366760), (88, 229225), (100, 201718), (106, 190300), (110, 183380), (173, 116600), (200, 100859), (212, 95150), (220, 91690), (265, 76120), (275, 73352), (346, 58300), (424, 47575), (440, 45845), (530, 38060), (550, 36676), (583, 34600), (692, 29150), (865, 23320), (1060, 19030), (1100, 18338), (1166, 17300), (1325, 15224), (1384, 14575), (1730, 11660), (1903, 10600), (2120, 9515), (2200, 9169), (2332, 8650), (2650, 7612), (2915, 6920), (3460, 5830), (3806, 5300), (4325, 4664)]