21308937

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 32592000

約数和(自身を除く): 11283063

約数列:

[1, 3, 13, 19, 39, 57, 149, 193, 247, 447, 579, 741, 1937, 2509, 2831, 3667, 5811, 7527, 8493, 11001, 28757, 36803, 47671, 86271, 110409, 143013, 373841, 546383, 1121523, 1639149, 7102979, 21308937]

約数ペア:

[(1, 21308937), (3, 7102979), (13, 1639149), (19, 1121523), (39, 546383), (57, 373841), (149, 143013), (193, 110409), (247, 86271), (447, 47671), (579, 36803), (741, 28757), (1937, 11001), (2509, 8493), (2831, 7527), (3667, 5811)]