20617173

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:239

約数の個数: 40

約数和(自身を含む): 32582880

約数和(自身を除く): 11965707

約数列:

[1, 3, 9, 27, 29, 67, 81, 87, 131, 201, 261, 393, 603, 783, 1179, 1809, 1943, 2349, 3537, 3799, 5427, 5829, 8777, 10611, 11397, 17487, 26331, 34191, 52461, 78993, 102573, 157383, 236979, 254533, 307719, 710937, 763599, 2290797, 6872391, 20617173]

約数ペア:

[(1, 20617173), (3, 6872391), (9, 2290797), (27, 763599), (29, 710937), (67, 307719), (81, 254533), (87, 236979), (131, 157383), (201, 102573), (261, 78993), (393, 52461), (603, 34191), (783, 26331), (1179, 17487), (1809, 11397), (1943, 10611), (2349, 8777), (3537, 5829), (3799, 5427)]