1999460

素因数分解:

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

素因数の和:655

約数の個数: 24

約数和(自身を含む): 4226040

約数和(自身を除く): 2226580

約数列:

[1, 2, 4, 5, 10, 20, 257, 389, 514, 778, 1028, 1285, 1556, 1945, 2570, 3890, 5140, 7780, 99973, 199946, 399892, 499865, 999730, 1999460]

約数ペア:

[(1, 1999460), (2, 999730), (4, 499865), (5, 399892), (10, 199946), (20, 99973), (257, 7780), (389, 5140), (514, 3890), (778, 2570), (1028, 1945), (1285, 1556)]