420985084

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{20089}}^1$

素因数の和:20150

約数の個数: 36

約数和(自身を含む): 823529280

約数和(自身を除く): 402544196

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 338, 403, 676, 806, 1612, 5239, 10478, 20089, 20956, 40178, 80356, 261157, 522314, 622759, 1044628, 1245518, 2491036, 3395041, 6790082, 8095867, 13580164, 16191734, 32383468, 105246271, 210492542, 420985084]

約数ペア:

[(1, 420985084), (2, 210492542), (4, 105246271), (13, 32383468), (26, 16191734), (31, 13580164), (52, 8095867), (62, 6790082), (124, 3395041), (169, 2491036), (338, 1245518), (403, 1044628), (676, 622759), (806, 522314), (1612, 261157), (5239, 80356), (10478, 40178), (20089, 20956)]