399889735

素因数分解:

$5^1\times 7^2\times {\mathrm{1051}}^1\times {\mathrm{1553}}^1$

素因数の和:2623

約数の個数: 24

約数和(自身を含む): 559104336

約数和(自身を除く): 159214601

約数列:

[1, 5, 7, 35, 49, 245, 1051, 1553, 5255, 7357, 7765, 10871, 36785, 51499, 54355, 76097, 257495, 380485, 1632203, 8161015, 11425421, 57127105, 79977947, 399889735]

約数ペア:

[(1, 399889735), (5, 79977947), (7, 57127105), (35, 11425421), (49, 8161015), (245, 1632203), (1051, 380485), (1553, 257495), (5255, 76097), (7357, 54355), (7765, 51499), (10871, 36785)]