19990872

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:653

約数の個数: 96

約数和(自身を含む): 60540480

約数和(自身を除く): 40549608

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 43, 44, 66, 72, 86, 88, 99, 129, 132, 172, 198, 258, 264, 344, 387, 396, 473, 516, 587, 774, 792, 946, 1032, 1174, 1419, 1548, 1761, 1892, 2348, 2838, 3096, 3522, 3784, 4257, 4696, 5283, 5676, 6457, 7044, 8514, 10566, 11352, 12914, 14088, 17028, 19371, 21132, 25241, 25828, 34056, 38742, 42264, 50482, 51656, 58113, 75723, 77484, 100964, 116226, 151446, 154968, 201928, 227169, 232452, 277651, 302892, 454338, 464904, 555302, 605784, 832953, 908676, 1110604, 1665906, 1817352, 2221208, 2498859, 3331812, 4997718, 6663624, 9995436, 19990872]

約数ペア:

[(1, 19990872), (2, 9995436), (3, 6663624), (4, 4997718), (6, 3331812), (8, 2498859), (9, 2221208), (11, 1817352), (12, 1665906), (18, 1110604), (22, 908676), (24, 832953), (33, 605784), (36, 555302), (43, 464904), (44, 454338), (66, 302892), (72, 277651), (86, 232452), (88, 227169), (99, 201928), (129, 154968), (132, 151446), (172, 116226), (198, 100964), (258, 77484), (264, 75723), (344, 58113), (387, 51656), (396, 50482), (473, 42264), (516, 38742), (587, 34056), (774, 25828), (792, 25241), (946, 21132), (1032, 19371), (1174, 17028), (1419, 14088), (1548, 12914), (1761, 11352), (1892, 10566), (2348, 8514), (2838, 7044), (3096, 6457), (3522, 5676), (3784, 5283), (4257, 4696)]