28472420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20051}}^1$

素因数の和:20131

約数の個数: 24

約数和(自身を含む): 60637248

約数和(自身を除く): 32164828

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20051, 40102, 80204, 100255, 200510, 401020, 1423621, 2847242, 5694484, 7118105, 14236210, 28472420]

約数ペア:

[(1, 28472420), (2, 14236210), (4, 7118105), (5, 5694484), (10, 2847242), (20, 1423621), (71, 401020), (142, 200510), (284, 100255), (355, 80204), (710, 40102), (1420, 20051)]