720666009

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{283}}^1\times {\mathrm{487}}^1$

素因数の和:866

約数の個数: 48

約数和(自身を含む): 1210739712

約数和(自身を除く): 490073703

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 283, 487, 581, 747, 849, 1461, 1743, 1981, 2547, 3409, 4383, 5229, 5943, 10227, 17829, 23489, 30681, 40421, 70467, 121263, 137821, 164423, 211401, 282947, 363789, 413463, 493269, 848841, 964747, 1240389, 1479807, 2546523, 2894241, 8682723, 11439143, 34317429, 80074001, 102952287, 240222003, 720666009]

約数ペア:

[(1, 720666009), (3, 240222003), (7, 102952287), (9, 80074001), (21, 34317429), (63, 11439143), (83, 8682723), (249, 2894241), (283, 2546523), (487, 1479807), (581, 1240389), (747, 964747), (849, 848841), (1461, 493269), (1743, 413463), (1981, 363789), (2547, 282947), (3409, 211401), (4383, 164423), (5229, 137821), (5943, 121263), (10227, 70467), (17829, 40421), (23489, 30681)]