9997300

素因数分解:

$2^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:660

約数の個数: 36

約数和(自身を含む): 21834540

約数和(自身を除く): 11837240

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 257, 389, 514, 778, 1028, 1285, 1556, 1945, 2570, 3890, 5140, 6425, 7780, 9725, 12850, 19450, 25700, 38900, 99973, 199946, 399892, 499865, 999730, 1999460, 2499325, 4998650, 9997300]

約数ペア:

[(1, 9997300), (2, 4998650), (4, 2499325), (5, 1999460), (10, 999730), (20, 499865), (25, 399892), (50, 199946), (100, 99973), (257, 38900), (389, 25700), (514, 19450), (778, 12850), (1028, 9725), (1285, 7780), (1556, 6425), (1945, 5140), (2570, 3890)]