28457681

素因数分解:

$7^3\times {\mathrm{163}}^1\times {\mathrm{509}}^1$

素因数の和:693

約数の個数: 16

約数和(自身を含む): 33456000

約数和(自身を除く): 4998319

約数列:

[1, 7, 49, 163, 343, 509, 1141, 3563, 7987, 24941, 55909, 82967, 174587, 580769, 4065383, 28457681]

約数ペア:

[(1, 28457681), (7, 4065383), (49, 580769), (163, 174587), (343, 82967), (509, 55909), (1141, 24941), (3563, 7987)]