405765

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:209

約数の個数: 24

約数和(自身を含む): 718848

約数和(自身を除く): 313083

約数列:

[1, 3, 5, 9, 15, 45, 71, 127, 213, 355, 381, 635, 639, 1065, 1143, 1905, 3195, 5715, 9017, 27051, 45085, 81153, 135255, 405765]

約数ペア:

[(1, 405765), (3, 135255), (5, 81153), (9, 45085), (15, 27051), (45, 9017), (71, 5715), (127, 3195), (213, 1905), (355, 1143), (381, 1065), (635, 639)]