21400678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{11593}}^1$

素因数の和:11679

約数の個数: 16

約数和(自身を含む): 35060256

約数和(自身を除く): 13659578

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 11593, 23186, 150709, 301418, 823103, 1646206, 10700339, 21400678]

約数ペア:

[(1, 21400678), (2, 10700339), (13, 1646206), (26, 823103), (71, 301418), (142, 150709), (923, 23186), (1846, 11593)]