21256812

素因数分解:

$2^2\times 3^2\times {\mathrm{523}}^1\times {\mathrm{1129}}^1$

素因数の和:1662

約数の個数: 36

約数和(自身を含む): 53882920

約数和(自身を除く): 32626108

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 523, 1046, 1129, 1569, 2092, 2258, 3138, 3387, 4516, 4707, 6276, 6774, 9414, 10161, 13548, 18828, 20322, 40644, 590467, 1180934, 1771401, 2361868, 3542802, 5314203, 7085604, 10628406, 21256812]

約数ペア:

[(1, 21256812), (2, 10628406), (3, 7085604), (4, 5314203), (6, 3542802), (9, 2361868), (12, 1771401), (18, 1180934), (36, 590467), (523, 40644), (1046, 20322), (1129, 18828), (1569, 13548), (2092, 10161), (2258, 9414), (3138, 6774), (3387, 6276), (4516, 4707)]