21417520

素因数分解:

$2^4\times 5^1\times {\mathrm{267719}}^1$

素因数の和:267732

約数の個数: 20

約数和(自身を含む): 49795920

約数和(自身を除く): 28378400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267719, 535438, 1070876, 1338595, 2141752, 2677190, 4283504, 5354380, 10708760, 21417520]

約数ペア:

[(1, 21417520), (2, 10708760), (4, 5354380), (5, 4283504), (8, 2677190), (10, 2141752), (16, 1338595), (20, 1070876), (40, 535438), (80, 267719)]