217438557

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{3307}}^1$

素因数の和:3449

約数の個数: 32

約数和(自身を含む): 345513984

約数和(自身を除く): 128075427

約数列:

[1, 3, 7, 21, 31, 93, 101, 217, 303, 651, 707, 2121, 3131, 3307, 9393, 9921, 21917, 23149, 65751, 69447, 102517, 307551, 334007, 717619, 1002021, 2152857, 2338049, 7014147, 10354217, 31062651, 72479519, 217438557]

約数ペア:

[(1, 217438557), (3, 72479519), (7, 31062651), (21, 10354217), (31, 7014147), (93, 2338049), (101, 2152857), (217, 1002021), (303, 717619), (651, 334007), (707, 307551), (2121, 102517), (3131, 69447), (3307, 65751), (9393, 23149), (9921, 21917)]