19812100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:146

約数の個数: 144

約数和(自身を含む): 55996416

約数和(自身を除く): 36184316

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 31, 35, 44, 50, 55, 62, 70, 77, 83, 100, 110, 124, 140, 154, 155, 166, 175, 217, 220, 275, 308, 310, 332, 341, 350, 385, 415, 434, 550, 581, 620, 682, 700, 770, 775, 830, 868, 913, 1085, 1100, 1162, 1364, 1540, 1550, 1660, 1705, 1826, 1925, 2075, 2170, 2324, 2387, 2573, 2905, 3100, 3410, 3652, 3850, 4150, 4340, 4565, 4774, 5146, 5425, 5810, 6391, 6820, 7700, 8300, 8525, 9130, 9548, 10292, 10850, 11620, 11935, 12782, 12865, 14525, 17050, 18011, 18260, 21700, 22825, 23870, 25564, 25730, 28303, 29050, 31955, 34100, 36022, 45650, 47740, 51460, 56606, 58100, 59675, 63910, 64325, 72044, 90055, 91300, 113212, 119350, 127820, 128650, 141515, 159775, 180110, 198121, 238700, 257300, 283030, 319550, 360220, 396242, 450275, 566060, 639100, 707575, 792484, 900550, 990605, 1415150, 1801100, 1981210, 2830300, 3962420, 4953025, 9906050, 19812100]

約数ペア:

[(1, 19812100), (2, 9906050), (4, 4953025), (5, 3962420), (7, 2830300), (10, 1981210), (11, 1801100), (14, 1415150), (20, 990605), (22, 900550), (25, 792484), (28, 707575), (31, 639100), (35, 566060), (44, 450275), (50, 396242), (55, 360220), (62, 319550), (70, 283030), (77, 257300), (83, 238700), (100, 198121), (110, 180110), (124, 159775), (140, 141515), (154, 128650), (155, 127820), (166, 119350), (175, 113212), (217, 91300), (220, 90055), (275, 72044), (308, 64325), (310, 63910), (332, 59675), (341, 58100), (350, 56606), (385, 51460), (415, 47740), (434, 45650), (550, 36022), (581, 34100), (620, 31955), (682, 29050), (700, 28303), (770, 25730), (775, 25564), (830, 23870), (868, 22825), (913, 21700), (1085, 18260), (1100, 18011), (1162, 17050), (1364, 14525), (1540, 12865), (1550, 12782), (1660, 11935), (1705, 11620), (1826, 10850), (1925, 10292), (2075, 9548), (2170, 9130), (2324, 8525), (2387, 8300), (2573, 7700), (2905, 6820), (3100, 6391), (3410, 5810), (3652, 5425), (3850, 5146), (4150, 4774), (4340, 4565)]