400959

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:191

約数の個数: 24

約数和(自身を含む): 655200

約数和(自身を除く): 254241

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 149, 207, 299, 447, 897, 1341, 1937, 2691, 3427, 5811, 10281, 17433, 30843, 44551, 133653, 400959]

約数ペア:

[(1, 400959), (3, 133653), (9, 44551), (13, 30843), (23, 17433), (39, 10281), (69, 5811), (117, 3427), (149, 2691), (207, 1937), (299, 1341), (447, 897)]