65279680

素因数分解:

$2^6\times 5^1\times {\mathrm{203999}}^1$

素因数の和:204016

約数の個数: 28

約数和(自身を含む): 155448000

約数和(自身を除く): 90168320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 203999, 407998, 815996, 1019995, 1631992, 2039990, 3263984, 4079980, 6527968, 8159960, 13055936, 16319920, 32639840, 65279680]

約数ペア:

[(1, 65279680), (2, 32639840), (4, 16319920), (5, 13055936), (8, 8159960), (10, 6527968), (16, 4079980), (20, 3263984), (32, 2039990), (40, 1631992), (64, 1019995), (80, 815996), (160, 407998), (320, 203999)]