405989997

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{563}}^1\times {\mathrm{1493}}^1$

素因数の和:2089

約数の個数: 32

約数和(自身を含む): 647129088

約数和(自身を除く): 241139091

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 563, 1493, 1689, 3941, 4479, 10451, 11823, 12949, 31353, 34339, 38847, 90643, 103017, 240373, 271929, 721119, 840559, 2521677, 5883913, 17651739, 19332857, 57998571, 135329999, 405989997]

約数ペア:

[(1, 405989997), (3, 135329999), (7, 57998571), (21, 19332857), (23, 17651739), (69, 5883913), (161, 2521677), (483, 840559), (563, 721119), (1493, 271929), (1689, 240373), (3941, 103017), (4479, 90643), (10451, 38847), (11823, 34339), (12949, 31353)]