12791285

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 17418240

約数和(自身を除く): 4626955

約数列:

[1, 5, 13, 47, 53, 65, 79, 235, 265, 395, 611, 689, 1027, 2491, 3055, 3445, 3713, 4187, 5135, 12455, 18565, 20935, 32383, 48269, 54431, 161915, 196789, 241345, 272155, 983945, 2558257, 12791285]

約数ペア:

[(1, 12791285), (5, 2558257), (13, 983945), (47, 272155), (53, 241345), (65, 196789), (79, 161915), (235, 54431), (265, 48269), (395, 32383), (611, 20935), (689, 18565), (1027, 12455), (2491, 5135), (3055, 4187), (3445, 3713)]