209894881

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1721}}^1$

素因数の和:1885

約数の個数: 24

約数和(自身を含む): 259126560

約数和(自身を除く): 49231679

約数列:

[1, 7, 19, 49, 131, 133, 917, 931, 1721, 2489, 6419, 12047, 17423, 32699, 84329, 121961, 225451, 228893, 1578157, 1602251, 4283569, 11047099, 29984983, 209894881]

約数ペア:

[(1, 209894881), (7, 29984983), (19, 11047099), (49, 4283569), (131, 1602251), (133, 1578157), (917, 228893), (931, 225451), (1721, 121961), (2489, 84329), (6419, 32699), (12047, 17423)]