21382005

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1181}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 36764928

約数和(自身を除く): 15382923

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 213, 255, 355, 1065, 1181, 1207, 3543, 3621, 5905, 6035, 17715, 18105, 20077, 60231, 83851, 100385, 251553, 301155, 419255, 1257765, 1425467, 4276401, 7127335, 21382005]

約数ペア:

[(1, 21382005), (3, 7127335), (5, 4276401), (15, 1425467), (17, 1257765), (51, 419255), (71, 301155), (85, 251553), (213, 100385), (255, 83851), (355, 60231), (1065, 20077), (1181, 18105), (1207, 17715), (3543, 6035), (3621, 5905)]