139649720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{498749}}^1$

素因数の和:498767

約数の個数: 32

約数和(自身を含む): 359100000

約数和(自身を除く): 219450280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 498749, 997498, 1994996, 2493745, 3491243, 3989992, 4987490, 6982486, 9974980, 13964972, 17456215, 19949960, 27929944, 34912430, 69824860, 139649720]

約数ペア:

[(1, 139649720), (2, 69824860), (4, 34912430), (5, 27929944), (7, 19949960), (8, 17456215), (10, 13964972), (14, 9974980), (20, 6982486), (28, 4987490), (35, 3989992), (40, 3491243), (56, 2493745), (70, 1994996), (140, 997498), (280, 498749)]