21395055

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{1021}}^1$

素因数の和:1167

約数の個数: 32

約数和(自身を含む): 37675008

約数和(自身を除く): 16279953

約数列:

[1, 3, 5, 11, 15, 33, 55, 127, 165, 381, 635, 1021, 1397, 1905, 3063, 4191, 5105, 6985, 11231, 15315, 20955, 33693, 56155, 129667, 168465, 389001, 648335, 1426337, 1945005, 4279011, 7131685, 21395055]

約数ペア:

[(1, 21395055), (3, 7131685), (5, 4279011), (11, 1945005), (15, 1426337), (33, 648335), (55, 389001), (127, 168465), (165, 129667), (381, 56155), (635, 33693), (1021, 20955), (1397, 15315), (1905, 11231), (3063, 6985), (4191, 5105)]