19901772

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1733}}^1$

素因数の和:1783

約数の個数: 72

約数和(自身を含む): 56805840

約数和(自身を除く): 36904068

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 29, 33, 36, 44, 58, 66, 87, 99, 116, 132, 174, 198, 261, 319, 348, 396, 522, 638, 957, 1044, 1276, 1733, 1914, 2871, 3466, 3828, 5199, 5742, 6932, 10398, 11484, 15597, 19063, 20796, 31194, 38126, 50257, 57189, 62388, 76252, 100514, 114378, 150771, 171567, 201028, 228756, 301542, 343134, 452313, 552827, 603084, 686268, 904626, 1105654, 1658481, 1809252, 2211308, 3316962, 4975443, 6633924, 9950886, 19901772]

約数ペア:

[(1, 19901772), (2, 9950886), (3, 6633924), (4, 4975443), (6, 3316962), (9, 2211308), (11, 1809252), (12, 1658481), (18, 1105654), (22, 904626), (29, 686268), (33, 603084), (36, 552827), (44, 452313), (58, 343134), (66, 301542), (87, 228756), (99, 201028), (116, 171567), (132, 150771), (174, 114378), (198, 100514), (261, 76252), (319, 62388), (348, 57189), (396, 50257), (522, 38126), (638, 31194), (957, 20796), (1044, 19063), (1276, 15597), (1733, 11484), (1914, 10398), (2871, 6932), (3466, 5742), (3828, 5199)]