21626721

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 12967839

約数列:

[1, 3, 9, 29, 41, 43, 47, 87, 123, 129, 141, 261, 369, 387, 423, 1189, 1247, 1363, 1763, 1927, 2021, 3567, 3741, 4089, 5289, 5781, 6063, 10701, 11223, 12267, 15867, 17343, 18189, 51127, 55883, 58609, 82861, 153381, 167649, 175827, 248583, 460143, 502947, 527481, 745749, 2402969, 7208907, 21626721]

約数ペア:

[(1, 21626721), (3, 7208907), (9, 2402969), (29, 745749), (41, 527481), (43, 502947), (47, 460143), (87, 248583), (123, 175827), (129, 167649), (141, 153381), (261, 82861), (369, 58609), (387, 55883), (423, 51127), (1189, 18189), (1247, 17343), (1363, 15867), (1763, 12267), (1927, 11223), (2021, 10701), (3567, 6063), (3741, 5781), (4089, 5289)]