21147552

素因数分解:

$2^5\times 3^2\times {\mathrm{97}}^1\times {\mathrm{757}}^1$

素因数の和:870

約数の個数: 72

約数和(自身を含む): 60838596

約数和(自身を除く): 39691044

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 97, 144, 194, 288, 291, 388, 582, 757, 776, 873, 1164, 1514, 1552, 1746, 2271, 2328, 3028, 3104, 3492, 4542, 4656, 6056, 6813, 6984, 9084, 9312, 12112, 13626, 13968, 18168, 24224, 27252, 27936, 36336, 54504, 72672, 73429, 109008, 146858, 218016, 220287, 293716, 440574, 587432, 660861, 881148, 1174864, 1321722, 1762296, 2349728, 2643444, 3524592, 5286888, 7049184, 10573776, 21147552]

約数ペア:

[(1, 21147552), (2, 10573776), (3, 7049184), (4, 5286888), (6, 3524592), (8, 2643444), (9, 2349728), (12, 1762296), (16, 1321722), (18, 1174864), (24, 881148), (32, 660861), (36, 587432), (48, 440574), (72, 293716), (96, 220287), (97, 218016), (144, 146858), (194, 109008), (288, 73429), (291, 72672), (388, 54504), (582, 36336), (757, 27936), (776, 27252), (873, 24224), (1164, 18168), (1514, 13968), (1552, 13626), (1746, 12112), (2271, 9312), (2328, 9084), (3028, 6984), (3104, 6813), (3492, 6056), (4542, 4656)]