401440

素因数分解:

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

素因数の和:221

約数の個数: 48

約数和(自身を含む): 1026648

約数和(自身を除く): 625208

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 193, 208, 260, 386, 416, 520, 772, 965, 1040, 1544, 1930, 2080, 2509, 3088, 3860, 5018, 6176, 7720, 10036, 12545, 15440, 20072, 25090, 30880, 40144, 50180, 80288, 100360, 200720, 401440]

約数ペア:

[(1, 401440), (2, 200720), (4, 100360), (5, 80288), (8, 50180), (10, 40144), (13, 30880), (16, 25090), (20, 20072), (26, 15440), (32, 12545), (40, 10036), (52, 7720), (65, 6176), (80, 5018), (104, 3860), (130, 3088), (160, 2509), (193, 2080), (208, 1930), (260, 1544), (386, 1040), (416, 965), (520, 772)]