200720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1$

素因数の和:219

約数の個数: 40

約数和(自身を含む): 505176

約数和(自身を除く): 304456

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 193, 208, 260, 386, 520, 772, 965, 1040, 1544, 1930, 2509, 3088, 3860, 5018, 7720, 10036, 12545, 15440, 20072, 25090, 40144, 50180, 100360, 200720]

約数ペア:

[(1, 200720), (2, 100360), (4, 50180), (5, 40144), (8, 25090), (10, 20072), (13, 15440), (16, 12545), (20, 10036), (26, 7720), (40, 5018), (52, 3860), (65, 3088), (80, 2509), (104, 1930), (130, 1544), (193, 1040), (208, 965), (260, 772), (386, 520)]