27992440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:664

約数の個数: 64

約数和(自身を含む): 72446400

約数和(自身を除く): 44453960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 389, 514, 778, 1028, 1285, 1556, 1799, 1945, 2056, 2570, 2723, 3112, 3598, 3890, 5140, 5446, 7196, 7780, 8995, 10280, 10892, 13615, 14392, 15560, 17990, 21784, 27230, 35980, 54460, 71960, 99973, 108920, 199946, 399892, 499865, 699811, 799784, 999730, 1399622, 1999460, 2799244, 3499055, 3998920, 5598488, 6998110, 13996220, 27992440]

約数ペア:

[(1, 27992440), (2, 13996220), (4, 6998110), (5, 5598488), (7, 3998920), (8, 3499055), (10, 2799244), (14, 1999460), (20, 1399622), (28, 999730), (35, 799784), (40, 699811), (56, 499865), (70, 399892), (140, 199946), (257, 108920), (280, 99973), (389, 71960), (514, 54460), (778, 35980), (1028, 27230), (1285, 21784), (1556, 17990), (1799, 15560), (1945, 14392), (2056, 13615), (2570, 10892), (2723, 10280), (3112, 8995), (3598, 7780), (3890, 7196), (5140, 5446)]