21511048

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{521}}^1$

素因数の和:937

約数の個数: 32

約数和(自身を含む): 43628760

約数和(自身を除く): 22117712

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 397, 521, 794, 1042, 1588, 2084, 3176, 4168, 5161, 6773, 10322, 13546, 20644, 27092, 41288, 54184, 206837, 413674, 827348, 1654696, 2688881, 5377762, 10755524, 21511048]

約数ペア:

[(1, 21511048), (2, 10755524), (4, 5377762), (8, 2688881), (13, 1654696), (26, 827348), (52, 413674), (104, 206837), (397, 54184), (521, 41288), (794, 27092), (1042, 20644), (1588, 13546), (2084, 10322), (3176, 6773), (4168, 5161)]