21415.000000

素因数分解:

$2^2\times 3^2\times {\mathrm{8971}}^1$

素因数の和:8981

約数の個数: 18

約数和(自身を含む): 816452

約数和(自身を除く): 493496

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 8971, 17942, 26913, 35884, 53826, 80739, 107652, 161478, 322956]

約数ペア:

[(1, 322956), (2, 161478), (3, 107652), (4, 80739), (6, 53826), (9, 35884), (12, 26913), (18, 17942), (36, 8971)]