25664079

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 41564160

約数和(自身を除く): 15900081

約数列:

[1, 3, 7, 19, 21, 57, 131, 133, 393, 399, 491, 917, 1473, 2489, 2751, 3437, 7467, 9329, 10311, 17423, 27987, 52269, 64321, 65303, 192963, 195909, 450247, 1222099, 1350741, 3666297, 8554693, 25664079]

約数ペア:

[(1, 25664079), (3, 8554693), (7, 3666297), (19, 1350741), (21, 1222099), (57, 450247), (131, 195909), (133, 192963), (393, 65303), (399, 64321), (491, 52269), (917, 27987), (1473, 17423), (2489, 10311), (2751, 9329), (3437, 7467)]