25402221

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 43041600

約数和(自身を除く): 17639379

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 169, 171, 247, 293, 351, 507, 513, 741, 879, 1521, 2223, 2637, 3211, 3809, 4563, 5567, 6669, 7911, 9633, 11427, 16701, 28899, 34281, 49517, 50103, 72371, 86697, 102843, 148551, 150309, 217113, 445653, 651339, 940823, 1336959, 1954017, 2822469, 8467407, 25402221]

約数ペア:

[(1, 25402221), (3, 8467407), (9, 2822469), (13, 1954017), (19, 1336959), (27, 940823), (39, 651339), (57, 445653), (117, 217113), (169, 150309), (171, 148551), (247, 102843), (293, 86697), (351, 72371), (507, 50103), (513, 49517), (741, 34281), (879, 28899), (1521, 16701), (2223, 11427), (2637, 9633), (3211, 7911), (3809, 6669), (4563, 5567)]