25686280

素因数分解:

$2^3\times 5^1\times {\mathrm{642157}}^1$

素因数の和:642168

約数の個数: 16

約数和(自身を含む): 57794220

約数和(自身を除く): 32107940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 642157, 1284314, 2568628, 3210785, 5137256, 6421570, 12843140, 25686280]

約数ペア:

[(1, 25686280), (2, 12843140), (4, 6421570), (5, 5137256), (8, 3210785), (10, 2568628), (20, 1284314), (40, 642157)]