21340072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{457}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 43281000

約数和(自身を除く): 21940928

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 449, 457, 898, 914, 1796, 1828, 3592, 3656, 5837, 5941, 11674, 11882, 23348, 23764, 46696, 47528, 205193, 410386, 820772, 1641544, 2667509, 5335018, 10670036, 21340072]

約数ペア:

[(1, 21340072), (2, 10670036), (4, 5335018), (8, 2667509), (13, 1641544), (26, 820772), (52, 410386), (104, 205193), (449, 47528), (457, 46696), (898, 23764), (914, 23348), (1796, 11882), (1828, 11674), (3592, 5941), (3656, 5837)]