21055528

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{1049}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 42777000

約数和(自身を除く): 21721472

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 193, 386, 772, 1049, 1544, 2098, 2509, 4196, 5018, 8392, 10036, 13637, 20072, 27274, 54548, 109096, 202457, 404914, 809828, 1619656, 2631941, 5263882, 10527764, 21055528]

約数ペア:

[(1, 21055528), (2, 10527764), (4, 5263882), (8, 2631941), (13, 1619656), (26, 809828), (52, 404914), (104, 202457), (193, 109096), (386, 54548), (772, 27274), (1049, 20072), (1544, 13637), (2098, 10036), (2509, 8392), (4196, 5018)]