1391400490

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1959719}}^1$

素因数の和:1959797

約数の個数: 16

約数和(自身を含む): 2539797120

約数和(自身を除く): 1148396630

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 1959719, 3919438, 9798595, 19597190, 139140049, 278280098, 695700245, 1391400490]

約数ペア:

[(1, 1391400490), (2, 695700245), (5, 278280098), (10, 139140049), (71, 19597190), (142, 9798595), (355, 3919438), (710, 1959719)]