686363390

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1\times {\mathrm{1399}}^1$

素因数の和:2168

約数の個数: 32

約数和(自身を含む): 1255564800

約数和(自身を除く): 569201410

約数列:

[1, 2, 5, 10, 71, 142, 355, 691, 710, 1382, 1399, 2798, 3455, 6910, 6995, 13990, 49061, 98122, 99329, 198658, 245305, 490610, 496645, 966709, 993290, 1933418, 4833545, 9667090, 68636339, 137272678, 343181695, 686363390]

約数ペア:

[(1, 686363390), (2, 343181695), (5, 137272678), (10, 68636339), (71, 9667090), (142, 4833545), (355, 1933418), (691, 993290), (710, 966709), (1382, 496645), (1399, 490610), (2798, 245305), (3455, 198658), (6910, 99329), (6995, 98122), (13990, 49061)]