21015592

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{509}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 42625800

約数和(自身を除く): 21610208

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 397, 509, 794, 1018, 1588, 2036, 3176, 4072, 5161, 6617, 10322, 13234, 20644, 26468, 41288, 52936, 202073, 404146, 808292, 1616584, 2626949, 5253898, 10507796, 21015592]

約数ペア:

[(1, 21015592), (2, 10507796), (4, 5253898), (8, 2626949), (13, 1616584), (26, 808292), (52, 404146), (104, 202073), (397, 52936), (509, 41288), (794, 26468), (1018, 20644), (1588, 13234), (2036, 10322), (3176, 6617), (4072, 5161)]