21572961

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 31847040

約数和(自身を除く): 10274079

約数列:

[1, 3, 19, 37, 53, 57, 111, 159, 193, 579, 703, 1007, 1961, 2109, 3021, 3667, 5883, 7141, 10229, 11001, 21423, 30687, 37259, 111777, 135679, 194351, 378473, 407037, 583053, 1135419, 7190987, 21572961]

約数ペア:

[(1, 21572961), (3, 7190987), (19, 1135419), (37, 583053), (53, 407037), (57, 378473), (111, 194351), (159, 135679), (193, 111777), (579, 37259), (703, 30687), (1007, 21423), (1961, 11001), (2109, 10229), (3021, 7141), (3667, 5883)]