20212821081

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{38197}}^1$

素因数の和:38395

約数の個数: 40

約数和(自身を含む): 31059557760

約数和(自身を除く): 10846736679

約数列:

[1, 3, 9, 27, 47, 81, 139, 141, 417, 423, 1251, 1269, 3753, 3807, 6533, 11259, 19599, 38197, 58797, 114591, 176391, 343773, 529173, 1031319, 1795259, 3093957, 5309383, 5385777, 15928149, 16157331, 47784447, 48471993, 143353341, 145415979, 249541001, 430060023, 748623003, 2245869009, 6737607027, 20212821081]

約数ペア:

[(1, 20212821081), (3, 6737607027), (9, 2245869009), (27, 748623003), (47, 430060023), (81, 249541001), (139, 145415979), (141, 143353341), (417, 48471993), (423, 47784447), (1251, 16157331), (1269, 15928149), (3753, 5385777), (3807, 5309383), (6533, 3093957), (11259, 1795259), (19599, 1031319), (38197, 529173), (58797, 343773), (114591, 176391)]