28211720

素因数分解:

$2^3\times 5^1\times {\mathrm{705293}}^1$

素因数の和:705304

約数の個数: 16

約数和(自身を含む): 63476460

約数和(自身を除く): 35264740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 705293, 1410586, 2821172, 3526465, 5642344, 7052930, 14105860, 28211720]

約数ペア:

[(1, 28211720), (2, 14105860), (4, 7052930), (5, 5642344), (8, 3526465), (10, 2821172), (20, 1410586), (40, 705293)]