20163974439

素因数分解:

$3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1\times {\mathrm{17921}}^1$

素因数の和:18471

約数の個数: 32

約数和(自身を含む): 31038036480

約数和(自身を除く): 10874062041

約数列:

[1, 3, 7, 21, 131, 393, 409, 917, 1227, 2751, 2863, 8589, 17921, 53579, 53763, 125447, 160737, 375053, 376341, 1125159, 2347651, 7042953, 7329689, 16433557, 21989067, 49300671, 51307823, 153923469, 960189259, 2880567777, 6721324813, 20163974439]

約数ペア:

[(1, 20163974439), (3, 6721324813), (7, 2880567777), (21, 960189259), (131, 153923469), (393, 51307823), (409, 49300671), (917, 21989067), (1227, 16433557), (2751, 7329689), (2863, 7042953), (8589, 2347651), (17921, 1125159), (53579, 376341), (53763, 375053), (125447, 160737)]