211040405

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{167}}^1\times {\mathrm{263}}^1$

素因数の和:497

約数の個数: 24

約数和(自身を含む): 264249216

約数和(自身を除く): 53208811

約数列:

[1, 5, 31, 155, 167, 263, 835, 961, 1315, 4805, 5177, 8153, 25885, 40765, 43921, 160487, 219605, 252743, 802435, 1263715, 1361551, 6807755, 42208081, 211040405]

約数ペア:

[(1, 211040405), (5, 42208081), (31, 6807755), (155, 1361551), (167, 1263715), (263, 802435), (835, 252743), (961, 219605), (1315, 160487), (4805, 43921), (5177, 40765), (8153, 25885)]