21000983974

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1\times {\mathrm{12479}}^1$

素因数の和:13228

約数の個数: 32

約数和(自身を含む): 33707980800

約数和(自身を除く): 12706996826

約数列:

[1, 2, 19, 38, 67, 134, 661, 1273, 1322, 2546, 12479, 12559, 24958, 25118, 44287, 88574, 237101, 474202, 836093, 841453, 1672186, 1682906, 8248619, 15885767, 16497238, 31771534, 156723761, 313447522, 552657473, 1105314946, 10500491987, 21000983974]

約数ペア:

[(1, 21000983974), (2, 10500491987), (19, 1105314946), (38, 552657473), (67, 313447522), (134, 156723761), (661, 31771534), (1273, 16497238), (1322, 15885767), (2546, 8248619), (12479, 1682906), (12559, 1672186), (24958, 841453), (25118, 836093), (44287, 474202), (88574, 237101)]