3987800

素因数分解:

$2^3\times 5^2\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 9404160

約数和(自身を除く): 5416360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 127, 157, 200, 254, 314, 508, 628, 635, 785, 1016, 1256, 1270, 1570, 2540, 3140, 3175, 3925, 5080, 6280, 6350, 7850, 12700, 15700, 19939, 25400, 31400, 39878, 79756, 99695, 159512, 199390, 398780, 498475, 797560, 996950, 1993900, 3987800]

約数ペア:

[(1, 3987800), (2, 1993900), (4, 996950), (5, 797560), (8, 498475), (10, 398780), (20, 199390), (25, 159512), (40, 99695), (50, 79756), (100, 39878), (127, 31400), (157, 25400), (200, 19939), (254, 15700), (314, 12700), (508, 7850), (628, 6350), (635, 6280), (785, 5080), (1016, 3925), (1256, 3175), (1270, 3140), (1570, 2540)]