21106480

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1367}}^1$

素因数の和:1573

約数の個数: 40

約数和(自身を含む): 49362912

約数和(自身を除く): 28256432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1367, 1544, 1930, 2734, 3088, 3860, 5468, 6835, 7720, 10936, 13670, 15440, 21872, 27340, 54680, 109360, 263831, 527662, 1055324, 1319155, 2110648, 2638310, 4221296, 5276620, 10553240, 21106480]

約数ペア:

[(1, 21106480), (2, 10553240), (4, 5276620), (5, 4221296), (8, 2638310), (10, 2110648), (16, 1319155), (20, 1055324), (40, 527662), (80, 263831), (193, 109360), (386, 54680), (772, 27340), (965, 21872), (1367, 15440), (1544, 13670), (1930, 10936), (2734, 7720), (3088, 6835), (3860, 5468)]