638645748

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{4093883}}^1$

素因数の和:4093903

約数の個数: 24

約数和(自身を含む): 1604802528

約数和(自身を除く): 966156780

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 4093883, 8187766, 12281649, 16375532, 24563298, 49126596, 53220479, 106440958, 159661437, 212881916, 319322874, 638645748]

約数ペア:

[(1, 638645748), (2, 319322874), (3, 212881916), (4, 159661437), (6, 106440958), (12, 53220479), (13, 49126596), (26, 24563298), (39, 16375532), (52, 12281649), (78, 8187766), (156, 4093883)]