13996220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 33808320

約数和(自身を除く): 19812100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 389, 514, 778, 1028, 1285, 1556, 1799, 1945, 2570, 2723, 3598, 3890, 5140, 5446, 7196, 7780, 8995, 10892, 13615, 17990, 27230, 35980, 54460, 99973, 199946, 399892, 499865, 699811, 999730, 1399622, 1999460, 2799244, 3499055, 6998110, 13996220]

約数ペア:

[(1, 13996220), (2, 6998110), (4, 3499055), (5, 2799244), (7, 1999460), (10, 1399622), (14, 999730), (20, 699811), (28, 499865), (35, 399892), (70, 199946), (140, 99973), (257, 54460), (389, 35980), (514, 27230), (778, 17990), (1028, 13615), (1285, 10892), (1556, 8995), (1799, 7780), (1945, 7196), (2570, 5446), (2723, 5140), (3598, 3890)]