257079100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{1559}}^1$

素因数の和:1687

約数の個数: 72

約数和(自身を含む): 597149280

約数和(自身を除く): 340070180

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 97, 100, 170, 194, 340, 388, 425, 485, 850, 970, 1559, 1649, 1700, 1940, 2425, 3118, 3298, 4850, 6236, 6596, 7795, 8245, 9700, 15590, 16490, 26503, 31180, 32980, 38975, 41225, 53006, 77950, 82450, 106012, 132515, 151223, 155900, 164900, 265030, 302446, 530060, 604892, 662575, 756115, 1325150, 1512230, 2570791, 2650300, 3024460, 3780575, 5141582, 7561150, 10283164, 12853955, 15122300, 25707910, 51415820, 64269775, 128539550, 257079100]

約数ペア:

[(1, 257079100), (2, 128539550), (4, 64269775), (5, 51415820), (10, 25707910), (17, 15122300), (20, 12853955), (25, 10283164), (34, 7561150), (50, 5141582), (68, 3780575), (85, 3024460), (97, 2650300), (100, 2570791), (170, 1512230), (194, 1325150), (340, 756115), (388, 662575), (425, 604892), (485, 530060), (850, 302446), (970, 265030), (1559, 164900), (1649, 155900), (1700, 151223), (1940, 132515), (2425, 106012), (3118, 82450), (3298, 77950), (4850, 53006), (6236, 41225), (6596, 38975), (7795, 32980), (8245, 31180), (9700, 26503), (15590, 16490)]