21039516

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{11027}}^1$

素因数の和:11090

約数の個数: 36

約数和(自身を含む): 54191592

約数和(自身を除く): 33152076

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908, 11027, 22054, 33081, 44108, 66162, 99243, 132324, 198486, 396972, 584431, 1168862, 1753293, 2337724, 3506586, 5259879, 7013172, 10519758, 21039516]

約数ペア:

[(1, 21039516), (2, 10519758), (3, 7013172), (4, 5259879), (6, 3506586), (9, 2337724), (12, 1753293), (18, 1168862), (36, 584431), (53, 396972), (106, 198486), (159, 132324), (212, 99243), (318, 66162), (477, 44108), (636, 33081), (954, 22054), (1908, 11027)]