21338148

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3181}}^1$

素因数の和:3244

約数の個数: 48

約数和(自身を含む): 54883136

約数和(自身を除く): 33544988

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 172, 258, 516, 559, 1118, 1677, 2236, 3181, 3354, 6362, 6708, 9543, 12724, 19086, 38172, 41353, 82706, 124059, 136783, 165412, 248118, 273566, 410349, 496236, 547132, 820698, 1641396, 1778179, 3556358, 5334537, 7112716, 10669074, 21338148]

約数ペア:

[(1, 21338148), (2, 10669074), (3, 7112716), (4, 5334537), (6, 3556358), (12, 1778179), (13, 1641396), (26, 820698), (39, 547132), (43, 496236), (52, 410349), (78, 273566), (86, 248118), (129, 165412), (156, 136783), (172, 124059), (258, 82706), (516, 41353), (559, 38172), (1118, 19086), (1677, 12724), (2236, 9543), (3181, 6708), (3354, 6362)]