28478545

素因数分解:

$5^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1\times {\mathrm{421}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 34880832

約数和(自身を除く): 6402287

約数列:

[1, 5, 83, 163, 415, 421, 815, 2105, 13529, 34943, 67645, 68623, 174715, 343115, 5695709, 28478545]

約数ペア:

[(1, 28478545), (5, 5695709), (83, 343115), (163, 174715), (415, 68623), (421, 67645), (815, 34943), (2105, 13529)]