21099964

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{647}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 38320128

約数和(自身を除く): 17220164

約数列:

[1, 2, 4, 31, 62, 124, 263, 526, 647, 1052, 1294, 2588, 8153, 16306, 20057, 32612, 40114, 80228, 170161, 340322, 680644, 5274991, 10549982, 21099964]

約数ペア:

[(1, 21099964), (2, 10549982), (4, 5274991), (31, 680644), (62, 340322), (124, 170161), (263, 80228), (526, 40114), (647, 32612), (1052, 20057), (1294, 16306), (2588, 8153)]