280348180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{499}}^1\times {\mathrm{4013}}^1$

素因数の和:4528

約数の個数: 48

約数和(自身を含む): 674352000

約数和(自身を除く): 394003820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 499, 998, 1996, 2495, 3493, 4013, 4990, 6986, 8026, 9980, 13972, 16052, 17465, 20065, 28091, 34930, 40130, 56182, 69860, 80260, 112364, 140455, 280910, 561820, 2002487, 4004974, 8009948, 10012435, 14017409, 20024870, 28034818, 40049740, 56069636, 70087045, 140174090, 280348180]

約数ペア:

[(1, 280348180), (2, 140174090), (4, 70087045), (5, 56069636), (7, 40049740), (10, 28034818), (14, 20024870), (20, 14017409), (28, 10012435), (35, 8009948), (70, 4004974), (140, 2002487), (499, 561820), (998, 280910), (1996, 140455), (2495, 112364), (3493, 80260), (4013, 69860), (4990, 56182), (6986, 40130), (8026, 34930), (9980, 28091), (13972, 20065), (16052, 17465)]