20807541

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 33965568

約数和(自身を除く): 13158027

約数列:

[1, 3, 9, 17, 31, 41, 51, 93, 107, 123, 153, 279, 321, 369, 527, 697, 963, 1271, 1581, 1819, 2091, 3317, 3813, 4387, 4743, 5457, 6273, 9951, 11439, 13161, 16371, 21607, 29853, 39483, 56389, 64821, 74579, 135997, 169167, 194463, 223737, 407991, 507501, 671211, 1223973, 2311949, 6935847, 20807541]

約数ペア:

[(1, 20807541), (3, 6935847), (9, 2311949), (17, 1223973), (31, 671211), (41, 507501), (51, 407991), (93, 223737), (107, 194463), (123, 169167), (153, 135997), (279, 74579), (321, 64821), (369, 56389), (527, 39483), (697, 29853), (963, 21607), (1271, 16371), (1581, 13161), (1819, 11439), (2091, 9951), (3317, 6273), (3813, 5457), (4387, 4743)]