21279924

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 57788640

約数和(自身を除く): 36508716

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 53, 57, 76, 106, 114, 159, 171, 212, 228, 318, 342, 477, 587, 636, 684, 954, 1007, 1174, 1761, 1908, 2014, 2348, 3021, 3522, 4028, 5283, 6042, 7044, 9063, 10566, 11153, 12084, 18126, 21132, 22306, 31111, 33459, 36252, 44612, 62222, 66918, 93333, 100377, 124444, 133836, 186666, 200754, 279999, 373332, 401508, 559998, 591109, 1119996, 1182218, 1773327, 2364436, 3546654, 5319981, 7093308, 10639962, 21279924]

約数ペア:

[(1, 21279924), (2, 10639962), (3, 7093308), (4, 5319981), (6, 3546654), (9, 2364436), (12, 1773327), (18, 1182218), (19, 1119996), (36, 591109), (38, 559998), (53, 401508), (57, 373332), (76, 279999), (106, 200754), (114, 186666), (159, 133836), (171, 124444), (212, 100377), (228, 93333), (318, 66918), (342, 62222), (477, 44612), (587, 36252), (636, 33459), (684, 31111), (954, 22306), (1007, 21132), (1174, 18126), (1761, 12084), (1908, 11153), (2014, 10566), (2348, 9063), (3021, 7044), (3522, 6042), (4028, 5283)]