20176485

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 38074176

約数和(自身を除く): 17897691

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 97, 105, 147, 245, 283, 291, 485, 679, 735, 849, 1415, 1455, 1981, 2037, 3395, 4245, 4753, 5943, 9905, 10185, 13867, 14259, 23765, 27451, 29715, 41601, 69335, 71295, 82353, 137255, 192157, 208005, 411765, 576471, 960785, 1345099, 2882355, 4035297, 6725495, 20176485]

約数ペア:

[(1, 20176485), (3, 6725495), (5, 4035297), (7, 2882355), (15, 1345099), (21, 960785), (35, 576471), (49, 411765), (97, 208005), (105, 192157), (147, 137255), (245, 82353), (283, 71295), (291, 69335), (485, 41601), (679, 29715), (735, 27451), (849, 23765), (1415, 14259), (1455, 13867), (1981, 10185), (2037, 9905), (3395, 5943), (4245, 4753)]