20915024

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{521}}^1$

素因数の和:735

約数の個数: 40

約数和(自身を含む): 43950312

約数和(自身を除く): 23035288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 193, 208, 386, 521, 772, 1042, 1544, 2084, 2509, 3088, 4168, 5018, 6773, 8336, 10036, 13546, 20072, 27092, 40144, 54184, 100553, 108368, 201106, 402212, 804424, 1307189, 1608848, 2614378, 5228756, 10457512, 20915024]

約数ペア:

[(1, 20915024), (2, 10457512), (4, 5228756), (8, 2614378), (13, 1608848), (16, 1307189), (26, 804424), (52, 402212), (104, 201106), (193, 108368), (208, 100553), (386, 54184), (521, 40144), (772, 27092), (1042, 20072), (1544, 13546), (2084, 10036), (2509, 8336), (3088, 6773), (4168, 5018)]